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3835 lines
176 KiB
3835 lines
176 KiB
<?php
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/* For licensing terms, see /license.txt*/
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/**
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* This is the course library for Chamilo.
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*
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* All main course functions should be placed here.
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*
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* Many functions of this library deal with providing support for
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* virtual/linked/combined courses (this was already used in several universities
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* but not available in standard Chamilo).
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*
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* The implementation changed, initially a course was a real course
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* if target_course_code was 0 , this was changed to NULL.
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* There are probably some places left with the wrong code.
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*
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* @package chamilo.library
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*/
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/**
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DOCUMENTATION
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(list not up to date, you can auto generate documentation with phpDocumentor)
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CourseManager::get_real_course_code_select_html($element_name, $has_size=true, $only_current_user_courses=true)
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CourseManager::check_parameter($parameter, $error_message)
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CourseManager::check_parameter_or_fail($parameter, $error_message)
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CourseManager::course_code_exists($wanted_course_code)
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CourseManager::get_real_course_list()
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CourseManager::get_virtual_course_list()
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GENERAL COURSE FUNCTIONS
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CourseManager::get_access_settings($course_code)
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CourseManager::set_course_tool_visibility($tool_table_id, $visibility)
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CourseManager::get_user_in_course_status($user_id, $course_code)
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CourseManager::add_user_to_course($user_id, $course_code)
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CourseManager::get_virtual_course_info($real_course_code)
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CourseManager::is_virtual_course_from_visual_code($visual_code)
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CourseManager::is_virtual_course_from_system_code($system_code)
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CourseManager::get_virtual_courses_linked_to_real_course($real_course_code)
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CourseManager::get_list_of_virtual_courses_for_specific_user_and_real_course($user_id, $real_course_code)
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CourseManager::has_virtual_courses_from_code($real_course_code, $user_id)
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CourseManager::get_target_of_linked_course($virtual_course_code)
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TITLE AND CODE FUNCTIONS
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CourseManager::create_combined_name($user_is_registered_in_real_course, $real_course_name, $virtual_course_list)
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CourseManager::create_combined_code($user_is_registered_in_real_course, $real_course_code, $virtual_course_list)
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USER FUNCTIONS
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CourseManager::get_real_course_list_of_user_as_course_admin($user_id)
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CourseManager::get_course_list_of_user_as_course_admin($user_id)
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CourseManager::is_user_subscribed_in_course($user_id, $course_code)
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CourseManager::is_user_subscribed_in_real_or_linked_course($user_id, $course_code)
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CourseManager::get_user_list_from_course_code($course_code)
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CourseManager::get_real_and_linked_user_list($course_code);
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GROUP FUNCTIONS
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CourseManager::get_group_list_of_course($course_code)
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CREATION FUNCTIONS
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CourseManager::attempt_create_virtual_course($real_course_code, $course_title, $wanted_course_code, $course_language, $course_category)
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*/
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/* INIT SECTION */
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require_once api_get_path(CONFIGURATION_PATH).'add_course.conf.php';
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require_once api_get_path(LIBRARY_PATH).'add_course.lib.inc.php';
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/**
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* CourseManager Class
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* @package chamilo.library
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*/
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class CourseManager {
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CONST MAX_COURSE_LENGTH_CODE = 40;
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//This constant is used to show separate user names in the course list (userportal), footer, etc
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CONST USER_SEPARATOR = ' |';
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CONST COURSE_FIELD_TYPE_CHECKBOX = 10;
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var $columns = array();
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/**
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* Creates a course
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* @param array with the columns in the main.course table
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* @param mixed false if the course was not created, array with the course info
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*/
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static function create_course($params) {
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global $_configuration;
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// Check portal limits
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$access_url_id = 1;
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if (api_get_multiple_access_url()) {
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$access_url_id = api_get_current_access_url_id();
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}
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if (is_array($_configuration[$access_url_id]) && isset($_configuration[$access_url_id]['hosting_limit_courses']) && $_configuration[$access_url_id]['hosting_limit_courses'] > 0) {
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$num = self::count_courses();
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if ($num >= $_configuration[$access_url_id]['hosting_limit_courses']) {
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return api_set_failure('PortalCoursesLimitReached');
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}
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}
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if (empty($params['title'])) {
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return false;
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}
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if (empty($params['wanted_code'])) {
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$params['wanted_code'] = $params['title'];
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// Check whether the requested course code has already been occupied.
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$params['wanted_code'] = generate_course_code(api_substr($params['title'], 0, self::MAX_COURSE_LENGTH_CODE));
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}
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// Create the course keys
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$keys = define_course_keys($params['wanted_code']);
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$params['exemplary_content'] = isset($params['exemplary_content']) ? $params['exemplary_content'] : false;
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if (count($keys)) {
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$params['code'] = $keys['currentCourseCode'];
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$params['visual_code'] = $keys['currentCourseId'];
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$params['directory'] = $keys['currentCourseRepository'];
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$course_info = api_get_course_info($params['code']);
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if (empty($course_info)) {
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$course_id = register_course($params);
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$course_info = api_get_course_info_by_id($course_id);
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if (!empty($course_info)) {
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prepare_course_repository($course_info['directory'], $course_info['code']);
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fill_db_course($course_id, $course_info['directory'], $course_info['course_language'], $params['exemplary_content']);
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if (api_get_setting('gradebook_enable_grade_model') == 'true') {
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//Create gradebook_category for the new course and add a gradebook model for the course
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if (isset($params['gradebook_model_id']) && !empty($params['gradebook_model_id']) && $params['gradebook_model_id'] != '-1') {
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require_once api_get_path(SYS_CODE_PATH).'gradebook/lib/gradebook_functions.inc.php';
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create_default_course_gradebook($course_info['code'], $params['gradebook_model_id']);
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}
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}
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return $course_info;
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}
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}
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}
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return false;
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}
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/**
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* Returns all the information of a given coursecode
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* @param string $course_code, the course code
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* @return an array with all the fields of the course table
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* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
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*/
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public static function get_course_information($course_code) {
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return Database::fetch_array(Database::query(
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"SELECT *, id as real_id FROM ".Database::get_main_table(TABLE_MAIN_COURSE)."
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WHERE code='".Database::escape_string($course_code)."'"),'ASSOC'
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);
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}
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/**
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* Returns all the information of a given coursecode
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* @param int the course id
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* @return an array with all the fields of the course table
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*/
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public static function get_course_information_by_id($course_id) {
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return Database::select('*, id as real_id', Database::get_main_table(TABLE_MAIN_COURSE), array('where'=>array('id = ?' =>intval($course_id))),'first');
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}
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/**
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* Returns a list of courses. Should work with quickform syntax
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* @param integer Offset (from the 7th = '6'). Optional.
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* @param integer Number of results we want. Optional.
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* @param string The column we want to order it by. Optional, defaults to first column.
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* @param string The direction of the order (ASC or DESC). Optional, defaults to ASC.
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* @param string The visibility of the course, or all by default.
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* @param string If defined, only return results for which the course *title* begins with this string
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*/
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public static function get_courses_list($from = 0, $howmany = 0, $orderby = 1, $orderdirection = 'ASC', $visibility = -1, $startwith = '') {
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$sql = "SELECT * FROM ".Database::get_main_table(TABLE_MAIN_COURSE)." ";
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if (!empty($startwith)) {
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$sql .= "WHERE title LIKE '".Database::escape_string($startwith)."%' ";
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if ($visibility !== -1 && $visibility == strval(intval($visibility))) {
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$sql .= " AND visibility = $visibility ";
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}
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} else {
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$sql .= "WHERE 1 ";
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if ($visibility !== -1 && $visibility == strval(intval($visibility))) {
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$sql .= " AND visibility = $visibility ";
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}
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}
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if (!empty($orderby)) {
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$sql .= " ORDER BY ".Database::escape_string($orderby)." ";
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} else {
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$sql .= " ORDER BY 1 ";
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}
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if (!in_array($orderdirection, array('ASC', 'DESC'))) {
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$sql .= 'ASC';
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} else {
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$sql .= Database::escape_string($orderdirection);
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}
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if (!empty($howmany) && is_int($howmany) and $howmany > 0) {
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$sql .= ' LIMIT '.Database::escape_string($howmany);
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} else {
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$sql .= ' LIMIT 1000000'; //virtually no limit
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}
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if (!empty($from)) {
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$from = intval($from);
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$sql .= ' OFFSET '.Database::escape_string($from);
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} else {
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$sql .= ' OFFSET 0';
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}
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return Database::store_result(Database::query($sql));
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}
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/**
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* Returns the access settings of the course:
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* which visibility;
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* wether subscribing is allowed;
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* wether unsubscribing is allowed.
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*
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* @param string $course_code, the course code
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* @todo for more consistency: use course_info call from database API
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* @return an array with int fields "visibility", "subscribe", "unsubscribe"
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*/
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public static function get_access_settings($course_code) {
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return Database::fetch_array(Database::query(
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"SELECT visibility, subscribe, unsubscribe from ".Database::get_main_table(TABLE_MAIN_COURSE)."
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WHERE code = '".Database::escape_string($course_code)."'")
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);
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}
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/**
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* Returns the status of a user in a course, which is COURSEMANAGER or STUDENT.
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* @param int User ID
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* @param string Course code
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* @return int the status of the user in that course
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*/
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public static function get_user_in_course_status($user_id, $course_code) {
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$result = Database::fetch_array(Database::query(
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"SELECT status FROM ".Database::get_main_table(TABLE_MAIN_COURSE_USER)."
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WHERE course_code = '".Database::escape_string($course_code)."' AND user_id = ".Database::escape_string($user_id))
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);
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return $result['status'];
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}
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public static function get_tutor_in_course_status($user_id, $course_code) {
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$result = Database::fetch_array(Database::query(
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"SELECT tutor_id FROM ".Database::get_main_table(TABLE_MAIN_COURSE_USER)."
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WHERE course_code = '".Database::escape_string($course_code)."' AND user_id = ".Database::escape_string($user_id))
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);
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return $result['tutor_id'];
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}
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/**
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* Unsubscribe one or more users from a course
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*
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* @param mixed user_id or an array with user ids
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* @param int session id
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* @param string course code
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*
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*/
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public static function unsubscribe_user($user_id, $course_code, $session_id = 0) {
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if (!is_array($user_id)) {
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$user_id = array($user_id);
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}
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if (count($user_id) == 0) {
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return;
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}
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$table_user = Database :: get_main_table(TABLE_MAIN_USER);
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if (!empty($session_id)) {
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$session_id = intval($session_id);
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} else {
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$session_id = intval($_SESSION['id_session']);
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}
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$user_list = array();
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//Cleaning the $user_id variable
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if (is_array($user_id)) {
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$new_user_id_list = array();
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foreach($user_id as $my_user_id) {
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$new_user_id_list[]= intval($my_user_id);
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}
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$new_user_id_list = array_filter($new_user_id_list);
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$user_list = $new_user_id_list;
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$user_ids = implode(',', $new_user_id_list);
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} else {
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$user_ids = intval($user_id);
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$user_list[] = $user_id;
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}
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$course_info = api_get_course_info($course_code);
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$course_id = $course_info['real_id'];
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// Unsubscribe user from all groups in the course.
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Database::query("DELETE FROM ".Database::get_course_table(TABLE_GROUP_USER)." WHERE c_id = $course_id AND user_id IN (".$user_ids.")");
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Database::query("DELETE FROM ".Database::get_course_table(TABLE_GROUP_TUTOR)." WHERE c_id = $course_id AND user_id IN (".$user_ids.")");
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// Erase user student publications (works) in the course - by André Boivin
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//@todo field student_publication.author should be the user id
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$sqlu = "SELECT * FROM $table_user WHERE user_id IN (".$user_ids.")";
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$resu = Database::query($sqlu);
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$username = Database::fetch_array($resu,'ASSOC');
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$userfirstname = $username['firstname'];
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$userlastname = $username['lastname'];
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$publication_name = $userfirstname.' '.$userlastname ;
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$table_course_user_publication = Database :: get_course_table(TABLE_STUDENT_PUBLICATION);
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$sql = "DELETE FROM $table_course_user_publication WHERE c_id = $course_id AND author = '".Database::escape_string($publication_name)."'";
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Database::query($sql);
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// Unsubscribe user from all blogs in the course.
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Database::query("DELETE FROM ".Database::get_course_table(TABLE_BLOGS_REL_USER)." WHERE c_id = $course_id AND user_id IN (".$user_ids.")");
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Database::query("DELETE FROM ".Database::get_course_table(TABLE_BLOGS_TASKS_REL_USER)."WHERE c_id = $course_id AND user_id IN (".$user_ids.")");
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//Deleting users in forum_notification and mailqueue course tables
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$sql_delete_forum_notification = "DELETE FROM ".Database::get_course_table(TABLE_FORUM_NOTIFICATION)." WHERE c_id = $course_id AND user_id IN (".$user_ids.")";
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Database::query($sql_delete_forum_notification);
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$sql_delete_mail_queue = "DELETE FROM ".Database::get_course_table(TABLE_FORUM_MAIL_QUEUE)." WHERE c_id = $course_id AND user_id IN (".$user_ids.")";
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Database::query($sql_delete_mail_queue);
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// Unsubscribe user from the course.
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if (!empty($session_id)) {
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// Delete in table session_rel_course_rel_user
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Database::query("DELETE FROM ".Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER)."
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WHERE id_session ='".$session_id."' AND course_code = '".Database::escape_string($_SESSION['_course']['id'])."' AND id_user IN ($user_ids)");
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foreach ($user_id as $uid) {
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// check if a user is register in the session with other course
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$sql = "SELECT id_user FROM ".Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER)." WHERE id_session='$session_id' AND id_user='$uid'";
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$rs = Database::query($sql);
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if (Database::num_rows($rs) == 0) {
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// Delete in table session_rel_user
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Database::query("DELETE FROM ".Database::get_main_table(TABLE_MAIN_SESSION_USER)."
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WHERE id_session ='".$session_id."' AND id_user='$uid' AND relation_type<>".SESSION_RELATION_TYPE_RRHH."");
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}
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}
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// Update the table session
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$row = Database::fetch_array(Database::query("SELECT COUNT(*) FROM ".Database::get_main_table(TABLE_MAIN_SESSION_USER)."
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WHERE id_session = '".$session_id."' AND relation_type<>".SESSION_RELATION_TYPE_RRHH." "));
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$count = $row[0]; // number of users by session
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$result = Database::query("UPDATE ".Database::get_main_table(TABLE_MAIN_SESSION)." SET nbr_users = '$count'
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WHERE id = '".$session_id."'");
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// Update the table session_rel_course
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$row = Database::fetch_array(@Database::query("SELECT COUNT(*) FROM ".Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER)." WHERE id_session = '$session_id' AND course_code = '$course_code' AND status<>2" ));
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$count = $row[0]; // number of users by session and course
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$result = @Database::query("UPDATE ".Database::get_main_table(TABLE_MAIN_SESSION_COURSE)." SET nbr_users = '$count' WHERE id_session = '$session_id' AND course_code = '$course_code' ");
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} else {
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Database::query("DELETE FROM ".Database::get_main_table(TABLE_MAIN_COURSE_USER)."
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WHERE user_id IN (".$user_ids.") AND relation_type<>".COURSE_RELATION_TYPE_RRHH." AND course_code = '".$course_code."'");
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// add event to system log
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$user_id = api_get_user_id();
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event_system(LOG_UNSUBSCRIBE_USER_FROM_COURSE, LOG_COURSE_CODE, $course_code, api_get_utc_datetime(), $user_id);
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foreach ($user_list as $user_id_to_delete) {
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$user_info = api_get_user_info($user_id_to_delete);
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event_system(LOG_UNSUBSCRIBE_USER_FROM_COURSE, LOG_USER_OBJECT, $user_info, api_get_utc_datetime(), $user_id);
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}
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}
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}
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/**
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* Subscribe a user to a course. No checks are performed here to see if
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* course subscription is allowed.
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* @param int User ID
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* @param string Course code
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* @param int Status (STUDENT, COURSEMANAGER, COURSE_ADMIN, NORMAL_COURSE_MEMBER)
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* @return bool True on success, false on failure
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* @see add_user_to_course
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*/
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public static function subscribe_user($user_id, $course_code, $status = STUDENT, $session_id = 0) {
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if ($user_id != strval(intval($user_id))) {
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return false; //detected possible SQL injection
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}
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$course_code = Database::escape_string($course_code);
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if (empty ($user_id) || empty ($course_code)) {
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return false;
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}
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if (!empty($session_id)) {
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$session_id = intval($session_id);
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} else {
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$session_id = api_get_session_id();
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}
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$status = ($status == STUDENT || $status == COURSEMANAGER) ? $status : STUDENT;
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//$role_id = ($status == COURSEMANAGER) ? COURSE_ADMIN : NORMAL_COURSE_MEMBER;
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// A preliminary check whether the user has bben already registered on the platform.
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if (Database::num_rows(@Database::query("SELECT status FROM ".Database::get_main_table(TABLE_MAIN_USER)."
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WHERE user_id = '$user_id' ")) == 0) {
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return false; // The user has not been registered to the platform.
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}
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// Check whether the user has not been already subscribed to the course.
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if (empty($session_id)) {
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if (Database::num_rows(@Database::query("SELECT * FROM ".Database::get_main_table(TABLE_MAIN_COURSE_USER)."
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WHERE user_id = '$user_id' AND relation_type<>".COURSE_RELATION_TYPE_RRHH." AND course_code = '$course_code'")) > 0) {
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return false; // The user has been already subscribed to the course.
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}
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}
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if (!empty($session_id)) {
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// Check whether the user has not already been stored in the session_rel_course_user table
|
|
if (Database::num_rows(@Database::query("SELECT * FROM ".Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER)."
|
|
WHERE course_code = '".$_SESSION['_course']['id']."'
|
|
AND id_session ='".$session_id."'
|
|
AND id_user = '".$user_id."'")) > 0) {
|
|
return false;
|
|
}
|
|
|
|
// check if the user is registered in the session with other course
|
|
$sql = "SELECT id_user FROM ".Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER)." WHERE id_session='".$session_id."' AND id_user='$user_id'";
|
|
$rs = Database::query($sql);
|
|
if (Database::num_rows($rs) == 0) {
|
|
// Check whether the user has not already been stored in the session_rel_user table
|
|
if (Database::num_rows(@Database::query("SELECT * FROM ".Database::get_main_table(TABLE_MAIN_SESSION_USER)."
|
|
WHERE id_session ='".$session_id."'
|
|
AND id_user = '".$user_id."' AND relation_type<>".SESSION_RELATION_TYPE_RRHH." ")) > 0) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Add him/her in the table session_rel_course_rel_user
|
|
@Database::query("INSERT INTO ".Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER)."
|
|
SET id_session ='".$session_id."',
|
|
course_code = '".$_SESSION['_course']['id']."',
|
|
id_user = '".$user_id."'");
|
|
|
|
// Add him/her in the table session_rel_user
|
|
@Database::query("INSERT INTO ".Database::get_main_table(TABLE_MAIN_SESSION_USER)."
|
|
SET id_session ='".$session_id."',
|
|
id_user = '".$user_id."'");
|
|
|
|
// Update the table session
|
|
$row = Database::fetch_array(@Database::query("SELECT COUNT(*) FROM ".Database::get_main_table(TABLE_MAIN_SESSION_USER)." WHERE id_session = '".$session_id."' AND relation_type<>".SESSION_RELATION_TYPE_RRHH.""));
|
|
$count = $row[0]; // number of users by session
|
|
$result = @Database::query("UPDATE ".Database::get_main_table(TABLE_MAIN_SESSION)." SET nbr_users = '$count' WHERE id = '".$session_id."'");
|
|
|
|
// Update the table session_rel_course
|
|
$row = Database::fetch_array(@Database::query("SELECT COUNT(*) FROM ".Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER)." WHERE id_session = '".$session_id."' AND course_code = '$course_code' AND status<>2" ));
|
|
$count = $row[0]; // number of users by session
|
|
$result = @Database::query("UPDATE ".Database::get_main_table(TABLE_MAIN_SESSION_COURSE)." SET nbr_users = '$count' WHERE id_session = '".$session_id."' AND course_code = '$course_code' ");
|
|
|
|
} else {
|
|
$course_sort = self::userCourseSort($user_id, $course_code);
|
|
$result = @Database::query("INSERT INTO ".Database::get_main_table(TABLE_MAIN_COURSE_USER)."
|
|
SET course_code = '$course_code',
|
|
user_id = '$user_id',
|
|
status = '".$status."',
|
|
sort = '". ($course_sort)."'");
|
|
|
|
// Add event to the system log
|
|
event_system(LOG_SUBSCRIBE_USER_TO_COURSE, LOG_COURSE_CODE, $course_code, api_get_utc_datetime(), api_get_user_id());
|
|
|
|
$user_info = api_get_user_info($user_id);
|
|
event_system(LOG_SUBSCRIBE_USER_TO_COURSE, LOG_USER_OBJECT, $user_info, api_get_utc_datetime(), api_get_user_id());
|
|
}
|
|
return (bool)$result;
|
|
}
|
|
|
|
/**
|
|
* Get the course id based on the original id and field name in the extra fields. Returns 0 if course was not found
|
|
*
|
|
* @param string Original course id
|
|
* @param string Original field name
|
|
* @return int Course id
|
|
*/
|
|
public static function get_course_code_from_original_id($original_course_id_value, $original_course_id_name) {
|
|
$t_cfv = Database::get_main_table(TABLE_MAIN_COURSE_FIELD_VALUES);
|
|
$table_field = Database::get_main_table(TABLE_MAIN_COURSE_FIELD);
|
|
$sql_course = "SELECT course_code FROM $table_field cf INNER JOIN $t_cfv cfv ON cfv.field_id=cf.id WHERE field_variable='$original_course_id_name' AND field_value='$original_course_id_value'";
|
|
$res = Database::query($sql_course);
|
|
$row = Database::fetch_object($res);
|
|
if ($row) {
|
|
return $row->course_code;
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Gets the course code from the course id. Returns null if course id was not found
|
|
*
|
|
* @param int Course id
|
|
* @return string Course code
|
|
*/
|
|
public static function get_course_code_from_course_id($id) {
|
|
$table = Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$id = intval($id);
|
|
$sql = "SELECT code FROM $table WHERE id = '$id' ";
|
|
$res = Database::query($sql);
|
|
$row = Database::fetch_object($res);
|
|
if ($row) {
|
|
return $row->code;
|
|
} else {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Subscribe a user $user_id to a course $course_code.
|
|
* @author Hugues Peeters
|
|
* @author Roan Embrechts
|
|
*
|
|
* @param int $user_id the id of the user
|
|
* @param string $course_code the course code
|
|
* @param string $status (optional) The user's status in the course
|
|
*
|
|
* @return boolean true if subscription succeeds, boolean false otherwise.
|
|
*/
|
|
public static function add_user_to_course($user_id, $course_code, $status = STUDENT) {
|
|
$debug = false;
|
|
$user_table = Database::get_main_table(TABLE_MAIN_USER);
|
|
$course_table = Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$course_user_table = Database::get_main_table(TABLE_MAIN_COURSE_USER);
|
|
|
|
$status = ($status == STUDENT || $status == COURSEMANAGER) ? $status : STUDENT;
|
|
if (empty($user_id) || empty($course_code) || ($user_id != strval(intval($user_id)))) {
|
|
return false;
|
|
}
|
|
$course_code = Database::escape_string($course_code);
|
|
|
|
// Check in advance whether the user has already been registered on the platform.
|
|
if (Database::num_rows(Database::query("SELECT status FROM ".$user_table." WHERE user_id = '$user_id' ")) == 0) {
|
|
if ($debug) error_log('The user has not been registered to the platform');
|
|
return false; // The user has not been registered to the platform.
|
|
}
|
|
|
|
// Check whether the user has already been subscribed to this course.
|
|
if (Database::num_rows(Database::query("SELECT * FROM ".$course_user_table." WHERE user_id = '$user_id' AND relation_type<>".COURSE_RELATION_TYPE_RRHH." AND course_code = '$course_code'")) > 0) {
|
|
if ($debug) error_log('The user has been already subscribed to the course');
|
|
return false; // The user has been subscribed to the course.
|
|
}
|
|
|
|
// Check in advance whether subscription is allowed or not for this course.
|
|
if (Database::num_rows(Database::query("SELECT code, visibility FROM ".$course_table." WHERE code = '$course_code' AND subscribe = '".SUBSCRIBE_NOT_ALLOWED."'")) > 0) {
|
|
if ($debug) error_log('Subscription is not allowed for this course');
|
|
return false; // Subscription is not allowed for this course.
|
|
}
|
|
|
|
// Ok, subscribe the user.
|
|
$max_sort = api_max_sort_value('0', $user_id);
|
|
return (bool)Database::query("INSERT INTO ".$course_user_table."
|
|
SET course_code = '$course_code',
|
|
user_id = '$user_id',
|
|
status = '".$status."',
|
|
sort = '". ($max_sort + 1)."'");
|
|
}
|
|
|
|
/**
|
|
* Checks wether a parameter exists.
|
|
* If it doesn't, the function displays an error message.
|
|
*
|
|
* @return true if parameter is set and not empty, false otherwise
|
|
* @todo move function to better place, main_api ?
|
|
*/
|
|
public static function check_parameter($parameter, $error_message) {
|
|
if (empty($parameter)) {
|
|
Display::display_normal_message($error_message);
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Lets the script die when a parameter check fails.
|
|
* @todo move function to better place, main_api ?
|
|
*/
|
|
public static function check_parameter_or_fail($parameter, $error_message) {
|
|
if (!self::check_parameter($parameter, $error_message)) {
|
|
die();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return true if there already are one or more courses
|
|
* with the same code OR visual_code (visualcode), false otherwise
|
|
*/
|
|
public static function course_code_exists($wanted_course_code) {
|
|
$wanted_course_code = Database::escape_string($wanted_course_code);
|
|
$result = Database::fetch_array(Database::query("SELECT COUNT(*) as number FROM ".Database::get_main_table(TABLE_MAIN_COURSE)." WHERE code = '$wanted_course_code' OR visual_code = '$wanted_course_code'"));
|
|
return $result['number'] > 0;
|
|
}
|
|
|
|
/**
|
|
* @return an array with the course info of all real courses on the platform
|
|
*/
|
|
public static function get_real_course_list() {
|
|
$sql_result = Database::query("SELECT * FROM ".Database::get_main_table(TABLE_MAIN_COURSE)." WHERE target_course_code IS NULL");
|
|
$real_course_list = array();
|
|
while ($result = Database::fetch_array($sql_result)) {
|
|
$real_course_list[$result['code']] = $result;
|
|
}
|
|
return $real_course_list;
|
|
}
|
|
|
|
/**
|
|
* Lists all virtual courses
|
|
* @return array Course info (course code => details) of all virtual courses on the platform
|
|
*/
|
|
public static function get_virtual_course_list() {
|
|
$sql_result = Database::query("SELECT * FROM ".Database::get_main_table(TABLE_MAIN_COURSE)." WHERE target_course_code IS NOT NULL");
|
|
$virtual_course_list = array();
|
|
while ($result = Database::fetch_array($sql_result)) {
|
|
$virtual_course_list[$result['code']] = $result;
|
|
}
|
|
return $virtual_course_list;
|
|
}
|
|
|
|
/**
|
|
* Returns an array with the course info of the real courses of which
|
|
* the current user is course admin
|
|
* @return array A list of courses details for courses to which the user is subscribed as course admin (status = 1)
|
|
*/
|
|
public static function get_real_course_list_of_user_as_course_admin($user_id) {
|
|
$result_array = array();
|
|
if ($user_id != strval(intval($user_id))) {
|
|
return $result_array;
|
|
}
|
|
$sql_result = Database::query("SELECT *
|
|
FROM ".Database::get_main_table(TABLE_MAIN_COURSE)." course
|
|
LEFT JOIN ".Database::get_main_table(TABLE_MAIN_COURSE_USER)." course_user
|
|
ON course.code = course_user.course_code
|
|
WHERE course.target_course_code IS NULL
|
|
AND course_user.user_id = '$user_id'
|
|
AND course_user.status = '1'");
|
|
if ($sql_result === false) { return $result_array; }
|
|
while ($result = Database::fetch_array($sql_result)) {
|
|
$result_array[] = $result;
|
|
}
|
|
return $result_array;
|
|
}
|
|
|
|
/**
|
|
* Get course list as coach
|
|
*
|
|
* @param int user id
|
|
* @return array course list
|
|
*
|
|
* */
|
|
public static function get_course_list_as_coach($user_id, $include_courses_in_sessions = false) {
|
|
|
|
//1. Getting courses as teacher (No session)
|
|
$courses_temp = CourseManager::get_course_list_of_user_as_course_admin($user_id);
|
|
$courses_as_admin = array();
|
|
|
|
if (!empty($courses_temp)) {
|
|
foreach($courses_temp as $course_item) {
|
|
$courses_as_admin[0][$course_item['course_code']] = $course_item['course_code'];
|
|
}
|
|
}
|
|
|
|
//2. Include courses in sessions
|
|
if ($include_courses_in_sessions) {
|
|
$sessions = Tracking::get_sessions_coached_by_user($user_id);
|
|
|
|
if (!empty($sessions)) {
|
|
foreach($sessions as $session_item) {
|
|
$courses = Tracking :: get_courses_followed_by_coach($user_id, $session_item['id']);
|
|
if (is_array($courses)) {
|
|
foreach($courses as $course_item) {
|
|
$courses_as_admin[$session_item['id']][$course_item] = $course_item;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return $courses_as_admin;
|
|
}
|
|
|
|
public static function get_user_list_from_courses_as_coach($user_id, $include_sessions = true) {
|
|
$courses_as_admin = $students_in_courses = array();
|
|
|
|
$sessions = CourseManager::get_course_list_as_coach($user_id, true);
|
|
|
|
if (!empty($sessions)) {
|
|
foreach($sessions as $session_id => $courses) {
|
|
if (!$include_sessions) {
|
|
if (!empty($session_id)) {
|
|
continue;
|
|
}
|
|
}
|
|
if (empty($session_id)) {
|
|
foreach($courses as $course_code) {
|
|
$students_in_course = CourseManager::get_user_list_from_course_code($course_code);
|
|
|
|
foreach($students_in_course as $user_item) {
|
|
//Only students
|
|
if ($user_item['status_rel'] == STUDENT)
|
|
$students_in_courses[$user_item['user_id']] = $user_item['user_id'];
|
|
}
|
|
}
|
|
} else {
|
|
$students_in_course = SessionManager::get_users_by_session($session_id, '0');
|
|
|
|
foreach($students_in_course as $user_item) {
|
|
$students_in_courses[$user_item['user_id']] = $user_item['user_id'];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
$students = Tracking :: get_student_followed_by_coach($user_id);
|
|
if (!empty($students_in_courses)) {
|
|
if (!empty($students)) {
|
|
$students = array_merge($students, $students_in_courses);
|
|
} else {
|
|
$students = $students_in_courses;
|
|
}
|
|
}
|
|
|
|
if (!empty($students)) {
|
|
$students = array_unique($students);
|
|
}
|
|
return $students;
|
|
}
|
|
|
|
/**
|
|
* @return an array with the course info of all the courses (real and virtual) of which
|
|
* the current user is course admin
|
|
*/
|
|
public static function get_course_list_of_user_as_course_admin($user_id) {
|
|
if ($user_id != strval(intval($user_id))) {
|
|
return array();
|
|
}
|
|
|
|
// Definitions database tables and variables
|
|
$tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$tbl_course_user = Database::get_main_table(TABLE_MAIN_COURSE_USER);
|
|
$user_id = intval($user_id);
|
|
$data = array();
|
|
|
|
$sql_nb_cours = "SELECT course_rel_user.course_code, course.title, course.id, course.db_name, course.id as real_id
|
|
FROM $tbl_course_user as course_rel_user
|
|
INNER JOIN $tbl_course as course
|
|
ON course.code = course_rel_user.course_code
|
|
WHERE course_rel_user.user_id='$user_id' AND course_rel_user.status='1'
|
|
ORDER BY course.title";
|
|
|
|
if (api_get_multiple_access_url()) {
|
|
$tbl_course_rel_access_url = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
|
|
$access_url_id = api_get_current_access_url_id();
|
|
if ($access_url_id != -1) {
|
|
$sql_nb_cours = " SELECT course_rel_user.course_code, course.title, course.id, course.db_name, course.id as real_id
|
|
FROM $tbl_course_user as course_rel_user
|
|
INNER JOIN $tbl_course as course
|
|
ON course.code = course_rel_user.course_code
|
|
INNER JOIN $tbl_course_rel_access_url course_rel_url
|
|
ON (course_rel_url.course_code= course.code)
|
|
WHERE access_url_id = $access_url_id AND course_rel_user.user_id='$user_id' AND course_rel_user.status='1'
|
|
ORDER BY course.title";
|
|
}
|
|
}
|
|
|
|
$result_nb_cours = Database::query($sql_nb_cours);
|
|
if (Database::num_rows($result_nb_cours) > 0) {
|
|
while ($row = Database::fetch_array($result_nb_cours,'ASSOC')) {
|
|
$data[$row['course_code']] = $row;
|
|
}
|
|
}
|
|
|
|
return $data;
|
|
}
|
|
|
|
/**
|
|
* Find out for which courses the user is registered and determine a visual course code and course title from that.
|
|
* Takes virtual courses into account
|
|
*
|
|
* Default case: the name and code stay what they are.
|
|
*
|
|
* Scenarios:
|
|
* - User is registered in real course and virtual courses; name / code become a mix of all
|
|
* - User is registered in real course only: name stays that of real course
|
|
* - User is registered in virtual course only: name becomes that of virtual course
|
|
* - user is not registered to any of the real/virtual courses: name stays that of real course
|
|
* (I'm not sure about the last case, but this seems not too bad)
|
|
*
|
|
* @author Roan Embrechts
|
|
* @param $user_id, the id of the user
|
|
* @param $course_info, an array with course info that you get using Database::get_course_info($course_system_code);
|
|
* @return an array with indices
|
|
* $return_result['title'] - the course title of the combined courses
|
|
* $return_result['code'] - the course code of the combined courses
|
|
* @deprecated use api_get_course_info()
|
|
*/
|
|
public static function determine_course_title_from_course_info($user_id, $course_info) {
|
|
|
|
if ($user_id != strval(intval($user_id))) {
|
|
return array();
|
|
}
|
|
|
|
$real_course_id = $course_info['system_code'];
|
|
$real_course_info = Database::get_course_info($real_course_id);
|
|
$real_course_name = $real_course_info['title'];
|
|
$real_course_visual_code = $real_course_info['visual_code'];
|
|
$real_course_real_code = Database::escape_string($course_info['system_code']);
|
|
|
|
//is the user registered in the real course?
|
|
$result = Database::fetch_array(Database::query("SELECT * FROM ".Database::get_main_table(TABLE_MAIN_COURSE_USER)."
|
|
WHERE user_id = '$user_id' AND relation_type<>".COURSE_RELATION_TYPE_RRHH." AND course_code = '$real_course_real_code'"));
|
|
$user_is_registered_in_real_course = !empty($result);
|
|
|
|
//get a list of virtual courses linked to the current real course and to which the current user is subscribed
|
|
$user_subscribed_virtual_course_list = self::get_list_of_virtual_courses_for_specific_user_and_real_course($user_id, $real_course_id);
|
|
$virtual_courses_exist = count($user_subscribed_virtual_course_list) > 0;
|
|
|
|
//now determine course code and name
|
|
if ($user_is_registered_in_real_course && $virtual_courses_exist) {
|
|
$course_info['name'] = self::create_combined_name($user_is_registered_in_real_course, $real_course_name, $user_subscribed_virtual_course_list);
|
|
$course_info['official_code'] = self::create_combined_code($user_is_registered_in_real_course, $real_course_visual_code, $user_subscribed_virtual_course_list);
|
|
}
|
|
elseif ($user_is_registered_in_real_course) {
|
|
//course name remains real course name
|
|
$course_info['name'] = $real_course_name;
|
|
$course_info['official_code'] = $real_course_visual_code;
|
|
}
|
|
elseif ($virtual_courses_exist) {
|
|
$course_info['name'] = self::create_combined_name($user_is_registered_in_real_course, $real_course_name, $user_subscribed_virtual_course_list);
|
|
$course_info['official_code'] = self::create_combined_code($user_is_registered_in_real_course, $real_course_visual_code, $user_subscribed_virtual_course_list);
|
|
} else {
|
|
//course name remains real course name
|
|
$course_info['name'] = $real_course_name;
|
|
$course_info['official_code'] = $real_course_visual_code;
|
|
}
|
|
|
|
$return_result['title'] = $course_info['name'];
|
|
$return_result['code'] = $course_info['official_code'];
|
|
return $return_result;
|
|
}
|
|
|
|
/**
|
|
* Create a course title based on all real and virtual courses the user is registered in.
|
|
* @param boolean $user_is_registered_in_real_course
|
|
* @param string $real_course_name, the title of the real course
|
|
* @param array $virtual_course_list, the list of virtual courses
|
|
*/
|
|
public static function create_combined_name($user_is_registered_in_real_course, $real_course_name, $virtual_course_list) {
|
|
|
|
$complete_course_name = array();
|
|
|
|
if ($user_is_registered_in_real_course) {
|
|
// Add the real name to the result.
|
|
$complete_course_name[] = $real_course_name;
|
|
}
|
|
|
|
// Add course titles of all virtual courses.
|
|
foreach ($virtual_course_list as $current_course) {
|
|
$complete_course_name[] = $current_course['title'];
|
|
}
|
|
|
|
// 'CombinedCourse' is from course_home language file.
|
|
return (($user_is_registered_in_real_course || count($virtual_course_list) > 1) ? get_lang('CombinedCourse').' ' : '').implode(' & ', $complete_course_name);
|
|
}
|
|
|
|
/**
|
|
* Create a course code based on all real and virtual courses the user is registered in.
|
|
*/
|
|
public static function create_combined_code($user_is_registered_in_real_course, $real_course_code, $virtual_course_list) {
|
|
|
|
$complete_course_code = array();
|
|
|
|
if ($user_is_registered_in_real_course) {
|
|
// Add the real code to the result
|
|
$complete_course_code[] = $real_course_code;
|
|
}
|
|
|
|
// Add codes of all virtual courses.
|
|
foreach ($virtual_course_list as $current_course) {
|
|
$complete_course_code[] = $current_course['visual_code'];
|
|
}
|
|
|
|
return implode(' & ', $complete_course_code);
|
|
}
|
|
|
|
/**
|
|
* Return course info array of virtual course
|
|
*
|
|
* Note this is different from getting information about a real course!
|
|
*
|
|
* @param $real_course_code, the id of the real course which the virtual course is linked to
|
|
* @deprecated virtual courses doesn't exist anymore
|
|
*/
|
|
public static function get_virtual_course_info($real_course_code) {
|
|
$sql_result = Database::query("SELECT * FROM ".Database::get_main_table(TABLE_MAIN_COURSE)."
|
|
WHERE target_course_code = '".Database::escape_string($real_course_code)."'");
|
|
$result = array();
|
|
while ($virtual_course = Database::fetch_array($sql_result)) {
|
|
$result[] = $virtual_course;
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* @param string $system_code, the system code of the course
|
|
* @return true if the course is a virtual course, false otherwise
|
|
* @deprecated virtual courses doesn't exist anymore
|
|
*/
|
|
public static function is_virtual_course_from_system_code($system_code) {
|
|
$result = Database::fetch_array(Database::query("SELECT target_course_code FROM ".Database::get_main_table(TABLE_MAIN_COURSE)."
|
|
WHERE code = '".Database::escape_string($system_code)."'"));
|
|
return !empty($result['target_course_code']);
|
|
}
|
|
|
|
/**
|
|
* Returns whether the course code given is a visual code
|
|
* @param string Visual course code
|
|
* @return true if the course is a virtual course, false otherwise
|
|
* @deprecated virtual courses doesn't exist anymore
|
|
*/
|
|
public static function is_virtual_course_from_visual_code($visual_code) {
|
|
$result = Database::fetch_array(Database::query("SELECT target_course_code FROM ".Database::get_main_table(TABLE_MAIN_COURSE)."
|
|
WHERE visual_code = '".Database::escape_string($visual_code)."'"));
|
|
return !empty($result['target_course_code']);
|
|
}
|
|
|
|
/**
|
|
* @return true if the real course has virtual courses that the user is subscribed to, false otherwise
|
|
* @deprecated virtual courses doesn't exist anymore
|
|
*/
|
|
public static function has_virtual_courses_from_code($real_course_code, $user_id) {
|
|
return count(self::get_list_of_virtual_courses_for_specific_user_and_real_course($user_id, $real_course_code)) > 0;
|
|
}
|
|
|
|
/**
|
|
* Return an array of arrays, listing course info of all virtual course
|
|
* linked to the real course ID $real_course_code
|
|
*
|
|
* @param string The id of the real course which the virtual courses are linked to
|
|
* @return array List of courses details
|
|
* @deprecated virtual courses doesn't exist anymore
|
|
*/
|
|
public static function get_virtual_courses_linked_to_real_course($real_course_code) {
|
|
$sql_result = Database::query("SELECT * FROM ".Database::get_main_table(TABLE_MAIN_COURSE)."
|
|
WHERE target_course_code = '".Database::get_main_table(TABLE_MAIN_COURSE)."'");
|
|
$result_array = array();
|
|
while ($result = Database::fetch_array($sql_result)) {
|
|
$result_array[] = $result;
|
|
}
|
|
return $result_array;
|
|
}
|
|
|
|
/**
|
|
* This function returns the course code of the real course
|
|
* to which a virtual course is linked.
|
|
*
|
|
* @param the course code of the virtual course
|
|
* @return the course code of the real course
|
|
*/
|
|
public static function get_target_of_linked_course($virtual_course_code) {
|
|
//get info about the virtual course
|
|
$result = Database::fetch_array(Database::query("SELECT * FROM ".Database::get_main_table(TABLE_MAIN_COURSE)."
|
|
WHERE code = '".Database::escape_string($virtual_course_code)."'"));
|
|
return $result['target_course_code'];
|
|
}
|
|
|
|
/*
|
|
USER FUNCTIONS
|
|
*/
|
|
|
|
/**
|
|
* Check if user is subscribed inside a course
|
|
* @param int User id
|
|
* @param string Course code, if this parameter is null, it'll check for all courses
|
|
* @param bool True for checking inside sessions too, by default is not checked
|
|
* @return bool true if the user is registered in the course, false otherwise
|
|
*/
|
|
public static function is_user_subscribed_in_course($user_id, $course_code = null, $in_a_session = false, $session_id = null) {
|
|
|
|
$user_id = intval($user_id);
|
|
|
|
if (empty($session_id)) {
|
|
$session_id = api_get_session_id();
|
|
} else {
|
|
$session_id = intval($session_id);
|
|
}
|
|
|
|
$condition_course = '';
|
|
if (isset($course_code)) {
|
|
$course_code = Database::escape_string($course_code);
|
|
$condition_course = ' AND course_code = "'.$course_code.'" ';
|
|
}
|
|
|
|
$result = Database::fetch_array(Database::query("SELECT * FROM ".Database::get_main_table(TABLE_MAIN_COURSE_USER)."
|
|
WHERE user_id = $user_id AND relation_type<>".COURSE_RELATION_TYPE_RRHH." $condition_course "));
|
|
|
|
if (!empty($result)) {
|
|
return true; // The user has been registered in this course.
|
|
}
|
|
|
|
if (!$in_a_session) {
|
|
return false; // The user has not been registered in this course.
|
|
}
|
|
|
|
if (Database::num_rows(Database::query('SELECT 1 FROM '.Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER).
|
|
' WHERE id_user = '.$user_id.' '.$condition_course.' ')) > 0) {
|
|
return true;
|
|
}
|
|
|
|
if (Database::num_rows(Database::query('SELECT 1 FROM '.Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER).
|
|
' WHERE id_user = '.$user_id.' AND status=2 '.$condition_course.' ')) > 0) {
|
|
return true;
|
|
}
|
|
|
|
if (Database::num_rows(Database::query('SELECT 1 FROM '.Database::get_main_table(TABLE_MAIN_SESSION).
|
|
' WHERE id='.$session_id.' AND id_coach='.$user_id)) > 0) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Is the user a teacher in the given course?
|
|
*
|
|
* @param $user_id, the id (int) of the user
|
|
* @param $course_code, the course code
|
|
*
|
|
* @return true if the user is a teacher in the course, false otherwise
|
|
*/
|
|
public static function is_course_teacher($user_id, $course_code) {
|
|
if ($user_id != strval(intval($user_id))) {
|
|
return false;
|
|
}
|
|
$sql_result = Database::query('SELECT status FROM '.Database::get_main_table(TABLE_MAIN_COURSE_USER).
|
|
' WHERE course_code="'.Database::escape_string($course_code).'" and user_id="'.$user_id.'"');
|
|
if (Database::num_rows($sql_result) > 0) {
|
|
return Database::result($sql_result, 0, 'status') == 1;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Is the user subscribed in the real course or linked courses?
|
|
*
|
|
* @param int the id of the user
|
|
* @param array info about the course (comes from course table, see database lib)
|
|
*
|
|
* @return true if the user is registered in the real course or linked courses, false otherwise
|
|
*/
|
|
public static function is_user_subscribed_in_real_or_linked_course ($user_id, $course_code, $session_id = '') {
|
|
|
|
if ($user_id != strval(intval($user_id))) {
|
|
return false;
|
|
}
|
|
|
|
$course_code = Database::escape_string($course_code);
|
|
|
|
if ($session_id == '') {
|
|
$result = Database::fetch_array(Database::query("SELECT *
|
|
FROM ".Database::get_main_table(TABLE_MAIN_COURSE)." course
|
|
LEFT JOIN ".Database::get_main_table(TABLE_MAIN_COURSE_USER)." course_user
|
|
ON course.code = course_user.course_code
|
|
WHERE course_user.user_id = '$user_id' AND course_user.relation_type<>".COURSE_RELATION_TYPE_RRHH." AND ( course.code = '$course_code' OR target_course_code = '$course_code')"));
|
|
return !empty($result);
|
|
}
|
|
|
|
// From here we trust session id.
|
|
|
|
// Is he/she subscribed to the session's course?
|
|
|
|
// A user?
|
|
if (Database::num_rows(Database::query("SELECT id_user
|
|
FROM ".Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER)."
|
|
WHERE id_session='".$_SESSION['id_session']."'
|
|
AND id_user='$user_id'"))) {
|
|
return true;
|
|
}
|
|
|
|
// A course coach?
|
|
if (Database::num_rows(Database::query("SELECT id_user
|
|
FROM ".Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER)."
|
|
WHERE id_session='".$_SESSION['id_session']."'
|
|
AND id_user = '$user_id' AND status = 2
|
|
AND course_code='$course_code'"))) {
|
|
return true;
|
|
}
|
|
|
|
// A session coach?
|
|
if (Database::num_rows(Database::query("SELECT id_coach
|
|
FROM ".Database::get_main_table(TABLE_MAIN_SESSION)." AS session
|
|
WHERE session.id='".$_SESSION['id_session']."'
|
|
AND id_coach='$user_id'"))) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Return user info array of all users registered in the specified real or virtual course
|
|
* This only returns the users that are registered in this actual course, not linked courses.
|
|
*
|
|
* @param string $course_code the code of the course
|
|
* @param boolean $with_session determines if the course is used in a session or not
|
|
* @param integer $session_id the id of the session
|
|
* @param string $limit the LIMIT statement of the sql statement
|
|
* @param string $order_by the field to order the users by. Valid values are 'lastname', 'firstname', 'username', 'email', 'official_code' OR a part of a SQL statement that starts with ORDER BY ...
|
|
* @param int if using the session_id: 0 or 2 (student, coach), if using session_id = 0 STUDENT or COURSEMANAGER
|
|
* @return array
|
|
*/
|
|
public static function get_user_list_from_course_code($course_code, $session_id = 0, $limit = '', $order_by = '', $filter_by_status = null) {
|
|
// variable initialisation
|
|
$session_id = intval($session_id);
|
|
$course_code = Database::escape_string($course_code);
|
|
$where = array();
|
|
|
|
// if the $order_by does not contain 'ORDER BY' we have to check if it is a valid field that can be sorted on
|
|
if (!strstr($order_by,'ORDER BY')) {
|
|
if (!empty($order_by) AND in_array($order_by, array('lastname', 'firstname', 'username', 'email', 'official_code'))) {
|
|
$order_by = 'ORDER BY user.'.$order_by;
|
|
} else {
|
|
$order_by = '';
|
|
}
|
|
}
|
|
|
|
$filter_by_status_condition = null;
|
|
|
|
if (!empty($session_id)) {
|
|
$sql = 'SELECT DISTINCT user.user_id, session_course_user.status as status_session, user.* ';
|
|
$sql .= ' FROM '.Database::get_main_table(TABLE_MAIN_USER).' as user ';
|
|
$sql .= ' LEFT JOIN '.Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER).' as session_course_user
|
|
ON user.user_id = session_course_user.id_user
|
|
AND session_course_user.course_code="'.$course_code.'"
|
|
AND session_course_user.id_session = '.$session_id;
|
|
$where[] = ' session_course_user.course_code IS NOT NULL ';
|
|
|
|
// 2 = coach
|
|
// 0 = student
|
|
if (isset($filter_by_status)) {
|
|
$filter_by_status = intval($filter_by_status);
|
|
$filter_by_status_condition = " session_course_user.status = $filter_by_status AND ";
|
|
}
|
|
} else {
|
|
$sql = 'SELECT DISTINCT course_rel_user.status as status_rel, user.user_id, course_rel_user.role, course_rel_user.tutor_id, user.* ';
|
|
$sql .= ' FROM '.Database::get_main_table(TABLE_MAIN_USER).' as user ';
|
|
|
|
$sql .= ' LEFT JOIN '.Database::get_main_table(TABLE_MAIN_COURSE_USER).' as course_rel_user
|
|
ON user.user_id = course_rel_user.user_id AND course_rel_user.relation_type<>'.COURSE_RELATION_TYPE_RRHH.'
|
|
AND course_rel_user.course_code="'.$course_code.'"';
|
|
$where[] = ' course_rel_user.course_code IS NOT NULL ';
|
|
|
|
if (isset($filter_by_status) && $filter_by_status != '') {
|
|
$filter_by_status = intval($filter_by_status);
|
|
$filter_by_status_condition = " course_rel_user.status = $filter_by_status AND ";
|
|
}
|
|
}
|
|
|
|
$multiple_access_url = api_get_multiple_access_url();
|
|
if ($multiple_access_url) {
|
|
$sql .= ' LEFT JOIN '.Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_USER).' au ON (au.user_id = user.user_id) ';
|
|
}
|
|
|
|
$sql .= ' WHERE '.$filter_by_status_condition.' '.implode(' OR ', $where);
|
|
|
|
if ($multiple_access_url) {
|
|
$current_access_url_id = api_get_current_access_url_id();
|
|
$sql .= " AND (access_url_id = $current_access_url_id ) ";
|
|
}
|
|
$sql .= ' '.$order_by.' '.$limit;
|
|
|
|
$rs = Database::query($sql);
|
|
$users = array();
|
|
|
|
if (Database::num_rows($rs)) {
|
|
while ($user = Database::fetch_array($rs)) {
|
|
$user_info = $user;
|
|
$user_info['status'] = $user['status'];
|
|
|
|
if (isset($user['role'])) {
|
|
$user_info['role'] = $user['role'];
|
|
}
|
|
if (isset($user['tutor_id'])) {
|
|
$user_info['tutor_id'] = $user['tutor_id'];
|
|
}
|
|
|
|
if (!empty($session_id)) {
|
|
$user_info['status_session'] = $user['status_session'];
|
|
}
|
|
|
|
$users[$user['user_id']] = $user_info;
|
|
}
|
|
}
|
|
return $users;
|
|
}
|
|
|
|
/**
|
|
* Gets subscribed users in a course or in a course/session
|
|
*
|
|
* @param string $course_code
|
|
* @param int $session_id
|
|
* @return int
|
|
*/
|
|
public static function get_users_count_in_course($course_code, $session_id = 0) {
|
|
// variable initialisation
|
|
$session_id = intval($session_id);
|
|
$course_code = Database::escape_string($course_code);
|
|
|
|
$sql .= 'SELECT DISTINCT count(*) as count FROM '.Database::get_main_table(TABLE_MAIN_USER).' as user ';
|
|
$where = array();
|
|
if (!empty($session_id)) {
|
|
$sql .= ' LEFT JOIN '.Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER).' as session_course_user
|
|
ON user.user_id = session_course_user.id_user
|
|
AND session_course_user.course_code = "'.$course_code.'"
|
|
AND session_course_user.id_session = '.$session_id;
|
|
|
|
$where[] = ' session_course_user.course_code IS NOT NULL ';
|
|
} else {
|
|
$sql .= ' LEFT JOIN '.Database::get_main_table(TABLE_MAIN_COURSE_USER).' as course_rel_user
|
|
ON user.user_id = course_rel_user.user_id AND course_rel_user.relation_type<>'.COURSE_RELATION_TYPE_RRHH.'
|
|
AND course_rel_user.course_code="'.$course_code.'"';
|
|
$where[] = ' course_rel_user.course_code IS NOT NULL ';
|
|
}
|
|
|
|
$multiple_access_url = api_get_multiple_access_url();
|
|
if ($multiple_access_url) {
|
|
$sql .= ' LEFT JOIN '.Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_USER).' au ON (au.user_id = user.user_id) ';
|
|
}
|
|
|
|
$sql .= ' WHERE '.implode(' OR ', $where);
|
|
|
|
if ($multiple_access_url) {
|
|
$current_access_url_id = api_get_current_access_url_id();
|
|
$sql .= " AND (access_url_id = $current_access_url_id ) ";
|
|
}
|
|
$rs = Database::query($sql);
|
|
$count = 0;
|
|
if (Database::num_rows($rs)) {
|
|
$user = Database::fetch_array($rs);
|
|
$count = $user['count'];
|
|
}
|
|
return $count;
|
|
}
|
|
|
|
/**
|
|
* Get a list of coaches of a course and a session
|
|
* @param string Course code
|
|
* @param int Session ID
|
|
* @return array List of users
|
|
*/
|
|
public static function get_coach_list_from_course_code($course_code, $session_id) {
|
|
|
|
if ($session_id != strval(intval($session_id))) {
|
|
return array();
|
|
}
|
|
|
|
$course_code = Database::escape_string($course_code);
|
|
|
|
$users = array();
|
|
|
|
// We get the coach for the given course in a given session.
|
|
$rs = Database::query('SELECT id_user FROM '.Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER).
|
|
' WHERE id_session="'.$session_id.'" AND course_code="'.$course_code.'" AND status = 2');
|
|
while ($user = Database::fetch_array($rs)) {
|
|
$user_info = Database::get_user_info_from_id($user['id_user']);
|
|
$user_info['status'] = $user['status'];
|
|
$user_info['role'] = $user['role'];
|
|
$user_info['tutor_id'] = $user['tutor_id'];
|
|
$user_info['email'] = $user['email'];
|
|
$users[$user['id_user']] = $user_info;
|
|
}
|
|
|
|
// We get the session coach.
|
|
$rs = Database::query('SELECT id_coach FROM '.Database::get_main_table(TABLE_MAIN_SESSION).' WHERE id="'.$session_id.'"');
|
|
$session_id_coach = Database::result($rs, 0, 'id_coach');
|
|
$user_info = Database::get_user_info_from_id($session_id_coach);
|
|
$user_info['status'] = $user['status'];
|
|
$user_info['role'] = $user['role'];
|
|
$user_info['tutor_id'] = $user['tutor_id'];
|
|
$user_info['email'] = $user['email'];
|
|
$users[$session_id_coach] = $user_info;
|
|
return $users;
|
|
}
|
|
|
|
|
|
/**
|
|
* Return user info array of all users registered in the specified real or virtual course
|
|
* This only returns the users that are registered in this actual course, not linked courses.
|
|
*
|
|
* @param string $course_code
|
|
* @param boolean $full list to true if we want sessions students too
|
|
* @return array with user id
|
|
*/
|
|
public static function get_student_list_from_course_code($course_code, $with_session = false, $session_id = 0) {
|
|
$session_id = intval($session_id);
|
|
$course_code = Database::escape_string($course_code);
|
|
|
|
$students = array();
|
|
|
|
if ($session_id == 0) {
|
|
// students directly subscribed to the course
|
|
$sql = "SELECT * FROM ".Database::get_main_table(TABLE_MAIN_COURSE_USER)."
|
|
WHERE course_code = '$course_code' AND status = ".STUDENT;
|
|
$rs = Database::query($sql);
|
|
while ($student = Database::fetch_array($rs)) {
|
|
$students[$student['user_id']] = $student;
|
|
}
|
|
}
|
|
|
|
// students subscribed to the course through a session
|
|
|
|
if ($with_session) {
|
|
$sql_query = "SELECT * FROM ".Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER)."
|
|
WHERE course_code = '$course_code' AND status <> 2";
|
|
if ($session_id != 0) {
|
|
$sql_query .= ' AND id_session = '.$session_id;
|
|
}
|
|
$rs = Database::query($sql_query);
|
|
while($student = Database::fetch_array($rs)) {
|
|
$students[$student['id_user']] = $student;
|
|
}
|
|
}
|
|
return $students;
|
|
}
|
|
|
|
/**
|
|
* Return user info array of all teacher-users registered in the specified real or virtual course
|
|
* This only returns the users that are registered in this actual course, not linked courses.
|
|
*
|
|
* @param string $course_code
|
|
* @return array with user id
|
|
*/
|
|
public static function get_teacher_list_from_course_code($course_code) {
|
|
$course_code = Database::escape_string($course_code);
|
|
$teachers = array();
|
|
$sql = "SELECT u.user_id, u.lastname, u.firstname, u.email, u.username, u.status
|
|
FROM ".Database::get_main_table(TABLE_MAIN_COURSE_USER)." cu INNER JOIN ".Database::get_main_table(TABLE_MAIN_USER)." u
|
|
ON (cu.user_id = u.user_id)
|
|
WHERE cu.course_code = '$course_code' AND
|
|
cu.status = 1 ";
|
|
$rs = Database::query($sql);
|
|
while ($teacher = Database::fetch_array($rs)) {
|
|
$teachers[$teacher['user_id']] = $teacher;
|
|
}
|
|
return $teachers;
|
|
}
|
|
|
|
public static function get_teacher_list_from_course_code_to_string($course_code, $separator = self::USER_SEPARATOR, $add_link_to_profile = false) {
|
|
$teacher_list = self::get_teacher_list_from_course_code($course_code);
|
|
$teacher_string = '';
|
|
$list = array();
|
|
if (!empty($teacher_list)) {
|
|
foreach($teacher_list as $teacher) {
|
|
$teacher_name = api_get_person_name($teacher['firstname'], $teacher['lastname']);
|
|
if ($add_link_to_profile) {
|
|
$url = api_get_path(WEB_AJAX_PATH).'user_manager.ajax.php?a=get_user_popup&resizable=0&height=300&user_id='.$teacher['user_id'];
|
|
$teacher_name = Display::url($teacher_name, $url, array('class' => 'ajax'));
|
|
}
|
|
$list[]= $teacher_name;
|
|
}
|
|
if (!empty($list)) {
|
|
$teacher_string = array_to_string($list, $separator);
|
|
}
|
|
}
|
|
return $teacher_string;
|
|
}
|
|
|
|
/**
|
|
* This function returns information about coachs from a course in session
|
|
* @param int - optional, session id
|
|
* @param string - optional, course code
|
|
* @return array - array containing user_id, lastname, firstname, username
|
|
*
|
|
*/
|
|
public static function get_coachs_from_course($session_id=0, $course_code='') {
|
|
|
|
if (!empty($session_id)) {
|
|
$session_id = intval($session_id);
|
|
} else {
|
|
$session_id = api_get_session_id();
|
|
}
|
|
|
|
if (!empty($course_code)) {
|
|
$course_code = Database::escape_string($course_code);
|
|
} else {
|
|
$course_code = api_get_course_id();
|
|
}
|
|
|
|
$tbl_user = Database :: get_main_table(TABLE_MAIN_USER);
|
|
$tbl_session_course_user = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
|
|
$coaches = array();
|
|
|
|
$sql = "SELECT u.user_id,u.lastname,u.firstname,u.username FROM $tbl_user u,$tbl_session_course_user scu
|
|
WHERE u.user_id = scu.id_user AND scu.id_session = '$session_id' AND scu.course_code = '$course_code' AND scu.status = 2";
|
|
$rs = Database::query($sql);
|
|
|
|
if (Database::num_rows($rs) > 0) {
|
|
while ($row = Database::fetch_array($rs)) {
|
|
$coaches[] = $row;
|
|
}
|
|
return $coaches;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
public static function get_coachs_from_course_to_string($session_id = 0, $course_code = null, $separator = self::USER_SEPARATOR, $add_link_to_profile = false) {
|
|
$coachs_course = self::get_coachs_from_course($session_id, $course_code);
|
|
$course_coachs = array();
|
|
|
|
if (is_array($coachs_course)) {
|
|
foreach ($coachs_course as $coach_course) {
|
|
$coach_name = api_get_person_name($coach_course['firstname'], $coach_course['lastname']);
|
|
if ($add_link_to_profile) {
|
|
$url = api_get_path(WEB_AJAX_PATH).'user_manager.ajax.php?a=get_user_popup&resizable=0&height=300&user_id='.$coach_course['user_id'];
|
|
$coach_name = Display::url($coach_name, $url, array('class' => 'ajax'));
|
|
}
|
|
$course_coachs[] = $coach_name;
|
|
}
|
|
}
|
|
$coaches_to_string = null;
|
|
if (is_array($course_coachs) && count($course_coachs)> 0 ) {
|
|
$coaches_to_string = array_to_string($course_coachs, $separator);
|
|
}
|
|
return $coaches_to_string;
|
|
}
|
|
|
|
public static function get_coach_list_from_course_code_to_string($course_code, $session_id) {
|
|
$tutor_data = '';
|
|
if ($session_id != 0) {
|
|
$coaches = self::get_email_of_tutor_to_session($session_id, $course_code);
|
|
$coach_list = array();
|
|
foreach ($coaches as $coach) {
|
|
$coach_list[] = $coach['complete_name'];
|
|
}
|
|
if (!empty($coach_list)) {
|
|
$tutor_data = implode(self::USER_SEPARATOR, $coach_list);
|
|
}
|
|
}
|
|
return $tutor_data;
|
|
}
|
|
|
|
|
|
/**
|
|
* Return user info array of all users registered in the specified course
|
|
* this includes the users of the course itsel and the users of all linked courses.
|
|
*
|
|
* @param array $course_info
|
|
* @return array with user info
|
|
*/
|
|
public static function get_real_and_linked_user_list($course_code, $with_sessions = true, $session_id = 0) {
|
|
//get list of virtual courses
|
|
$virtual_course_list = self::get_virtual_courses_linked_to_real_course($course_code);
|
|
$complete_user_list = array();
|
|
|
|
//get users from real course
|
|
$user_list = self::get_user_list_from_course_code($course_code, $session_id);
|
|
foreach ($user_list as $this_user) {
|
|
$complete_user_list[] = $this_user;
|
|
}
|
|
|
|
//get users from linked courses
|
|
foreach ($virtual_course_list as $this_course) {
|
|
$course_code = $this_course['code'];
|
|
$user_list = self::get_user_list_from_course_code($course_code, $session_id);
|
|
foreach ($user_list as $this_user) {
|
|
$complete_user_list[] = $this_user;
|
|
}
|
|
}
|
|
|
|
return $complete_user_list;
|
|
}
|
|
|
|
/**
|
|
* Return an array of arrays, listing course info of all courses in the list
|
|
* linked to the real course $real_course_code, to which the user $user_id is subscribed.
|
|
*
|
|
* @param $user_id, the id (int) of the user
|
|
* @param $real_course_code, the id (char) of the real course
|
|
*
|
|
* @return array of course info arrays
|
|
*/
|
|
public static function get_list_of_virtual_courses_for_specific_user_and_real_course($user_id, $course_code) {
|
|
$result_array = array();
|
|
|
|
if ($user_id != strval(intval($user_id))) {
|
|
return $result_array;
|
|
}
|
|
|
|
$course_code = Database::escape_string($course_code);
|
|
$sql = "SELECT *
|
|
FROM ".Database::get_main_table(TABLE_MAIN_COURSE)." course
|
|
LEFT JOIN ".Database::get_main_table(TABLE_MAIN_COURSE_USER)." course_user
|
|
ON course.code = course_user.course_code
|
|
WHERE course.target_course_code = '$course_code' AND course_user.user_id = '$user_id' AND course_user.relation_type<>".COURSE_RELATION_TYPE_RRHH." ";
|
|
$sql_result = Database::query($sql);
|
|
|
|
while ($result = Database::fetch_array($sql_result)) {
|
|
$result_array[] = $result;
|
|
}
|
|
return $result_array;
|
|
}
|
|
|
|
/*
|
|
GROUP FUNCTIONS
|
|
*/
|
|
|
|
/**
|
|
* Get the list of groups from the course
|
|
* @param string Course code
|
|
* @param int Session ID (optional)
|
|
* @return array List of groups info
|
|
*/
|
|
public static function get_group_list_of_course($course_code, $session_id = 0) {
|
|
$course_info = Database::get_course_info($course_code);
|
|
$course_id = $course_info['real_id'];
|
|
$group_list = array();
|
|
$session_id != 0 ? $session_condition = ' WHERE g.session_id IN(1,'.intval($session_id).')' : $session_condition = ' WHERE g.session_id = 0';
|
|
$sql = "SELECT g.id, g.name, COUNT(gu.id) userNb
|
|
FROM ".Database::get_course_table(TABLE_GROUP)." AS g
|
|
LEFT JOIN ".Database::get_course_table(TABLE_GROUP_USER)." gu
|
|
ON (g.id = gu.group_id AND g.c_id = $course_id AND gu.c_id = $course_id)
|
|
$session_condition
|
|
GROUP BY g.id
|
|
ORDER BY g.name";
|
|
$result = Database::query($sql);
|
|
|
|
while ($group_data = Database::fetch_array($result)) {
|
|
$group_list[$group_data['id']] = $group_data;
|
|
}
|
|
return $group_list;
|
|
}
|
|
|
|
/**
|
|
* Checks all parameters needed to create a virtual course.
|
|
* If they are all set, the virtual course creation procedure is called.
|
|
*
|
|
* Call this function instead of create_virtual_course
|
|
* @param string Course code
|
|
* @param string Course title
|
|
* @param string Wanted course code
|
|
* @param string Course language
|
|
* @param string Course category
|
|
* @return bool True on success, false on error
|
|
*/
|
|
public static function attempt_create_virtual_course($real_course_code, $course_title, $wanted_course_code, $course_language, $course_category) {
|
|
//better: create parameter list, check the entire list, when false display errormessage
|
|
self::check_parameter_or_fail($real_course_code, 'Unspecified parameter: real course id.');
|
|
self::check_parameter_or_fail($course_title, 'Unspecified parameter: course title.');
|
|
self::check_parameter_or_fail($wanted_course_code, 'Unspecified parameter: wanted course code.');
|
|
self::check_parameter_or_fail($course_language, 'Unspecified parameter: course language.');
|
|
self::check_parameter_or_fail($course_category, 'Unspecified parameter: course category.');
|
|
|
|
return self::create_virtual_course($real_course_code, $course_title, $wanted_course_code, $course_language, $course_category);
|
|
}
|
|
|
|
/**
|
|
* This function creates a virtual course.
|
|
* It assumes all parameters have been checked and are not empty.
|
|
* It checks wether a course with the $wanted_course_code already exists.
|
|
*
|
|
* Users of this library should consider this function private,
|
|
* please call attempt_create_virtual_course instead of this one.
|
|
*
|
|
* note: The virtual course 'owner' id (the first course admin) is set to the CURRENT user id.
|
|
* @param string Course code
|
|
* @param string Course title
|
|
* @param string Wanted course code
|
|
* @param string Course language
|
|
* @param string Course category
|
|
* @return true if the course creation succeeded, false otherwise
|
|
* @todo research: expiration date of a course
|
|
*/
|
|
public static function create_virtual_course($real_course_code, $course_title, $wanted_course_code, $course_language, $course_category) {
|
|
global $firstExpirationDelay;
|
|
|
|
$user_id = api_get_user_id();
|
|
$real_course_info = Database::get_course_info($real_course_code);
|
|
$real_course_code = $real_course_info['system_code'];
|
|
|
|
//check: virtual course creation fails if another course has the same
|
|
//code, real or fake.
|
|
if (self::course_code_exists($wanted_course_code)) {
|
|
Display::display_error_message($wanted_course_code.' - '.get_lang('CourseCodeAlreadyExists'));
|
|
return false;
|
|
}
|
|
|
|
//add data to course table, course_rel_user
|
|
$course_sys_code = $wanted_course_code;
|
|
$course_screen_code = $wanted_course_code;
|
|
$course_repository = $real_course_info['directory'];
|
|
$course_db_name = $real_course_info['db_name'];
|
|
$responsible_teacher = $real_course_info['tutor_name'];
|
|
$faculty_shortname = $course_category;
|
|
// $course_title = $course_title;
|
|
// $course_language = $course_language;
|
|
$teacher_id = $user_id;
|
|
|
|
//HACK ----------------------------------------------------------------
|
|
$expiration_date = time() + $firstExpirationDelay;
|
|
//END HACK ------------------------------------------------------------
|
|
|
|
register_course($course_sys_code, $course_screen_code, $course_repository, $course_db_name, $responsible_teacher, $faculty_shortname, $course_title, $course_language, $teacher_id, $expiration_date);
|
|
|
|
//above was the normal course creation table update call,
|
|
//now one more thing: fill in the target_course_code field
|
|
Database::query("UPDATE ".Database::get_main_table(TABLE_MAIN_COURSE)." SET target_course_code = '$real_course_code'
|
|
WHERE code = '".Database::escape_string($course_sys_code)."' LIMIT 1 ");
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Delete a course
|
|
* This function deletes a whole course-area from the platform. When the
|
|
* given course is a virtual course, the database and directory will not be
|
|
* deleted.
|
|
* When the given course is a real course, also all virtual courses refering
|
|
* to the given course will be deleted.
|
|
* Considering the fact that we remove all traces of the course in the main
|
|
* database, it makes sense to remove all tracking as well (if stats databases exist)
|
|
* so that a new course created with this code would not use the remains of an older
|
|
* course.
|
|
*
|
|
* @param string The code of the course to delete
|
|
* @todo When deleting a virtual course: unsubscribe users from that virtual
|
|
* course from the groups in the real course if they are not subscribed in
|
|
* that real course.
|
|
* @todo Remove globals
|
|
*/
|
|
public static function delete_course($code) {
|
|
global $_configuration;
|
|
|
|
$table_course = Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$table_course_user = Database::get_main_table(TABLE_MAIN_COURSE_USER);
|
|
$table_course_class = Database::get_main_table(TABLE_MAIN_COURSE_CLASS);
|
|
|
|
$table_session_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
|
|
$table_session_course_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
|
|
$table_course_survey = Database::get_main_table(TABLE_MAIN_SHARED_SURVEY);
|
|
$table_course_survey_question = Database::get_main_table(TABLE_MAIN_SHARED_SURVEY_QUESTION);
|
|
$table_course_survey_question_option= Database::get_main_table(TABLE_MAIN_SHARED_SURVEY_QUESTION_OPTION);
|
|
|
|
$table_stats_hotpots = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_HOTPOTATOES);
|
|
$table_stats_attempt = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_ATTEMPT);
|
|
$table_stats_exercises = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_EXERCICES);
|
|
$table_stats_access = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_ACCESS);
|
|
$table_stats_lastaccess = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_LASTACCESS);
|
|
$table_stats_course_access = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_COURSE_ACCESS);
|
|
$table_stats_online = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_ONLINE);
|
|
$table_stats_default = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_DEFAULT);
|
|
$table_stats_downloads = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_DOWNLOADS);
|
|
$table_stats_links = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_LINKS);
|
|
$table_stats_uploads = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_UPLOADS);
|
|
|
|
|
|
$code = Database::escape_string($code);
|
|
$sql = "SELECT * FROM $table_course WHERE code='".$code."'";
|
|
$res = Database::query($sql);
|
|
if (Database::num_rows($res) == 0) {
|
|
return;
|
|
}
|
|
$this_course = Database::fetch_array($res);
|
|
|
|
self::create_database_dump($code);
|
|
if (!self::is_virtual_course_from_system_code($code)) {
|
|
// If this is not a virtual course, look for virtual courses that depend on this one, if any
|
|
$virtual_courses = self::get_virtual_courses_linked_to_real_course($code);
|
|
foreach ($virtual_courses as $index => $virtual_course) {
|
|
// Unsubscribe all classes from the virtual course
|
|
$sql = "DELETE FROM $table_course_class WHERE course_code='".$virtual_course['code']."'";
|
|
Database::query($sql);
|
|
// Unsubscribe all users from the virtual course
|
|
$sql = "DELETE FROM $table_course_user WHERE course_code='".$virtual_course['code']."'";
|
|
Database::query($sql);
|
|
// Delete the course from the sessions tables
|
|
$sql = "DELETE FROM $table_session_course WHERE course_code='".$virtual_course['code']."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_session_course_user WHERE course_code='".$virtual_course['code']."'";
|
|
Database::query($sql);
|
|
// Delete the course from the survey tables
|
|
$sql = "DELETE FROM $table_course_survey WHERE course_code='".$virtual_course['code']."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_course_survey_user WHERE db_name='".$virtual_course['db_name']."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_course_survey_reminder WHERE db_name='".$virtual_course['db_name']."'";
|
|
Database::query($sql);
|
|
|
|
// Delete the course from the stats tables
|
|
|
|
$sql = "DELETE FROM $table_stats_hotpots WHERE exe_cours_id = '".$virtual_course['code']."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_stats_attempt WHERE course_code = '".$virtual_course['code']."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_stats_exercises WHERE exe_cours_id = '".$virtual_course['code']."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_stats_access WHERE access_cours_code = '".$virtual_course['code']."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_stats_lastaccess WHERE access_cours_code = '".$virtual_course['code']."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_stats_course_access WHERE course_code = '".$virtual_course['code']."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_stats_online WHERE course = '".$virtual_course['code']."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_stats_default WHERE default_cours_code = '".$virtual_course['code']."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_stats_downloads WHERE down_cours_id = '".$virtual_course['code']."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_stats_links WHERE links_cours_id = '".$virtual_course['code']."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_stats_uploads WHERE upload_cours_id = '".$virtual_course['code']."'";
|
|
Database::query($sql);
|
|
|
|
// Delete the course from the course table
|
|
$sql = "DELETE FROM $table_course WHERE code='".$virtual_course['code']."'";
|
|
Database::query($sql);
|
|
}
|
|
|
|
$sql = "SELECT * FROM $table_course WHERE code='".$code."'";
|
|
$res = Database::query($sql);
|
|
$course = Database::fetch_array($res);
|
|
$course_tables = get_course_tables();
|
|
|
|
//Cleaning c_x tables
|
|
if (!empty($course['id'])) {
|
|
foreach($course_tables as $table) {
|
|
$table = Database::get_course_table($table);
|
|
$sql = "DELETE FROM $table WHERE c_id = {$course['id']} ";
|
|
Database::query($sql);
|
|
}
|
|
}
|
|
$course_dir = api_get_path(SYS_COURSE_PATH).$course['directory'];
|
|
$archive_dir = api_get_path(SYS_ARCHIVE_PATH).$course['directory'].'_'.time();
|
|
if (is_dir($course_dir)) {
|
|
rename($course_dir, $archive_dir);
|
|
}
|
|
}
|
|
|
|
// Unsubscribe all classes from the course
|
|
$sql = "DELETE FROM $table_course_class WHERE course_code='".$code."'";
|
|
Database::query($sql);
|
|
// Unsubscribe all users from the course
|
|
$sql = "DELETE FROM $table_course_user WHERE course_code='".$code."'";
|
|
Database::query($sql);
|
|
// Delete the course from the sessions tables
|
|
$sql = "DELETE FROM $table_session_course WHERE course_code='".$code."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_session_course_user WHERE course_code='".$code."'";
|
|
Database::query($sql);
|
|
|
|
$sql = 'SELECT survey_id FROM '.$table_course_survey.' WHERE course_code="'.$code.'"';
|
|
$result_surveys = Database::query($sql);
|
|
while($surveys = Database::fetch_array($result_surveys)) {
|
|
$survey_id = $surveys[0];
|
|
$sql = 'DELETE FROM '.$table_course_survey_question.' WHERE survey_id="'.$survey_id.'"';
|
|
Database::query($sql);
|
|
$sql = 'DELETE FROM '.$table_course_survey_question_option.' WHERE survey_id="'.$survey_id.'"';
|
|
Database::query($sql);
|
|
$sql = 'DELETE FROM '.$table_course_survey.' WHERE survey_id="'.$survey_id.'"';
|
|
Database::query($sql);
|
|
}
|
|
|
|
// Delete the course from the stats tables
|
|
|
|
$sql = "DELETE FROM $table_stats_hotpots WHERE exe_cours_id = '".$code."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_stats_attempt WHERE course_code = '".$code."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_stats_exercises WHERE exe_cours_id = '".$code."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_stats_access WHERE access_cours_code = '".$code."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_stats_lastaccess WHERE access_cours_code = '".$code."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_stats_course_access WHERE course_code = '".$code."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_stats_online WHERE course = '".$code."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_stats_default WHERE default_cours_code = '".$code."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_stats_downloads WHERE down_cours_id = '".$code."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_stats_links WHERE links_cours_id = '".$code."'";
|
|
Database::query($sql);
|
|
$sql = "DELETE FROM $table_stats_uploads WHERE upload_cours_id = '".$code."'";
|
|
Database::query($sql);
|
|
|
|
global $_configuration;
|
|
if ($_configuration['multiple_access_urls']) {
|
|
require_once api_get_path(LIBRARY_PATH).'urlmanager.lib.php';
|
|
$url_id = 1;
|
|
if (api_get_current_access_url_id() != -1) {
|
|
$url_id = api_get_current_access_url_id();
|
|
}
|
|
UrlManager::delete_url_rel_course($code, $url_id);
|
|
}
|
|
|
|
// Delete the course from the database
|
|
$sql = "DELETE FROM $table_course WHERE code='".$code."'";
|
|
Database::query($sql);
|
|
|
|
// delete extra course fields
|
|
$t_cf = Database::get_main_table(TABLE_MAIN_COURSE_FIELD);
|
|
$t_cfv = Database::get_main_table(TABLE_MAIN_COURSE_FIELD_VALUES);
|
|
|
|
$sql = "SELECT distinct field_id FROM $t_cfv WHERE course_code = '$code'";
|
|
$res_field_ids = @Database::query($sql);
|
|
|
|
while($row_field_id = Database::fetch_row($res_field_ids)){
|
|
$field_ids[] = $row_field_id[0];
|
|
}
|
|
|
|
//delete from table_course_field_value from a given course_code
|
|
|
|
$sql_course_field_value = "DELETE FROM $t_cfv WHERE course_code = '$code'";
|
|
@Database::query($sql_course_field_value);
|
|
|
|
$sql = "SELECT distinct field_id FROM $t_cfv";
|
|
$res_field_all_ids = @Database::query($sql);
|
|
|
|
while($row_field_all_id = Database::fetch_row($res_field_all_ids)){
|
|
$field_all_ids[] = $row_field_all_id[0];
|
|
}
|
|
|
|
if (is_array($field_ids) && count($field_ids) > 0) {
|
|
foreach ($field_ids as $field_id) {
|
|
// check if field id is used into table field value
|
|
if (is_array($field_all_ids)) {
|
|
if (in_array($field_id, $field_all_ids)) {
|
|
continue;
|
|
} else {
|
|
$sql_course_field = "DELETE FROM $t_cf WHERE id = '$field_id'";
|
|
Database::query($sql_course_field);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Add event to system log
|
|
$user_id = api_get_user_id();
|
|
event_system(LOG_COURSE_DELETE, LOG_COURSE_CODE, $code, api_get_utc_datetime(), $user_id, $code);
|
|
|
|
}
|
|
|
|
/**
|
|
* Creates a file called mysql_dump.sql in the course folder
|
|
* @param $course_code The code of the course
|
|
* @todo Implementation for single database
|
|
*/
|
|
public static function create_database_dump($course_code) {
|
|
global $_configuration;
|
|
|
|
if ($_configuration['single_database']) {
|
|
return;
|
|
}
|
|
$sql_dump = '';
|
|
$course_code = Database::escape_string($course_code);
|
|
$table_course = Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$sql = "SELECT * FROM $table_course WHERE code = '$course_code'";
|
|
$res = Database::query($sql);
|
|
$course = Database::fetch_array($res);
|
|
|
|
$course_tables = get_course_tables();
|
|
|
|
if (!empty($course['id'])) {
|
|
//Cleaning c_x tables
|
|
foreach($course_tables as $table) {
|
|
$table = Database::get_course_table($table);
|
|
$sql = "SELECT * FROM $table WHERE c_id = {$course['id']} ";
|
|
$res_table = Database::query($sql);
|
|
|
|
while ($row = Database::fetch_array($res_table, 'ASSOC')) {
|
|
$row_to_save = array();
|
|
foreach ($row as $key => $value) {
|
|
$row_to_save[$key] = $key."='".Database::escape_string($row[$key])."'";
|
|
}
|
|
$sql_dump .= "\nINSERT INTO $table SET ".implode(', ', $row_to_save).';';
|
|
}
|
|
}
|
|
}
|
|
|
|
if (is_dir(api_get_path(SYS_COURSE_PATH).$course['directory'])) {
|
|
$file_name = api_get_path(SYS_COURSE_PATH).$course['directory'].'/mysql_dump.sql';
|
|
$handle = fopen($file_name, 'a+');
|
|
if ($handle !== false) {
|
|
fwrite($handle, $sql_dump);
|
|
fclose($handle);
|
|
} else {
|
|
//TODO trigger exception in a try-catch
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sort courses for a specific user ??
|
|
* @param int User ID
|
|
* @param string Course code
|
|
* @return int Minimum course order
|
|
* @todo Review documentation
|
|
*/
|
|
public static function userCourseSort($user_id, $course_code) {
|
|
|
|
if ($user_id != strval(intval($user_id))) {
|
|
return false;
|
|
}
|
|
|
|
$course_code = Database::escape_string($course_code);
|
|
$TABLECOURSE = Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$TABLECOURSUSER = Database::get_main_table(TABLE_MAIN_COURSE_USER);
|
|
|
|
$course_title = Database::result(Database::query('SELECT title FROM '.$TABLECOURSE.
|
|
' WHERE code="'.$course_code.'"'), 0, 0);
|
|
|
|
$result = Database::query('SELECT course.code as code, course.title as title, cu.sort as sort FROM '.$TABLECOURSUSER.' as cu, '.$TABLECOURSE.' as course
|
|
WHERE course.code = cu.course_code
|
|
AND user_id = "'.$user_id.'"
|
|
AND cu.relation_type<>'.COURSE_RELATION_TYPE_RRHH.'
|
|
AND user_course_cat=0 ORDER BY cu.sort');
|
|
|
|
$course_title_precedent = '';
|
|
$counter = 0;
|
|
$course_found = false;
|
|
$course_sort = 1;
|
|
|
|
while ($courses = Database::fetch_array($result)){
|
|
|
|
if ($course_title_precedent == '') {
|
|
$course_title_precedent = $courses['title'];
|
|
}
|
|
|
|
if (api_strcasecmp($course_title_precedent, $course_title) < 0) {
|
|
|
|
$course_found = true;
|
|
$course_sort = $courses['sort'];
|
|
|
|
if ($counter == 0) {
|
|
$sql = 'UPDATE '.$TABLECOURSUSER.' SET sort = sort+1 WHERE user_id= "'.$user_id.'" AND relation_type<>'.COURSE_RELATION_TYPE_RRHH.' AND user_course_cat="0" AND sort > "'.$course_sort.'"';
|
|
$course_sort++;
|
|
} else {
|
|
$sql = 'UPDATE '.$TABLECOURSUSER.' SET sort = sort+1 WHERE user_id= "'.$user_id.'" AND relation_type<>'.COURSE_RELATION_TYPE_RRHH.' AND user_course_cat="0" AND sort >= "'.$course_sort.'"';
|
|
}
|
|
|
|
Database::query($sql);
|
|
break;
|
|
|
|
} else {
|
|
$course_title_precedent = $courses['title'];
|
|
}
|
|
|
|
$counter++;
|
|
}
|
|
|
|
// We must register the course in the beginning of the list
|
|
if (Database::num_rows($result) > 0 && !$course_found) {
|
|
$course_sort = Database::result(Database::query('SELECT min(sort) as min_sort FROM '.$TABLECOURSUSER.
|
|
' WHERE user_id="'.$user_id.'" AND user_course_cat="0"'), 0, 0);
|
|
|
|
Database::query('UPDATE '.$TABLECOURSUSER.' SET sort = sort+1
|
|
WHERE user_id= "'.$user_id.'" AND user_course_cat="0"');
|
|
}
|
|
|
|
return $course_sort;
|
|
}
|
|
|
|
/**
|
|
* create recursively all categories as option of the select passed in paramater.
|
|
*
|
|
* @param object $select_element the quickform select where the options will be added
|
|
* @param string $category_selected_code the option value to select by default (used mainly for edition of courses)
|
|
* @param string $parent_code the parent category of the categories added (default=null for root category)
|
|
* @param string $padding the indent param (you shouldn't indicate something here)
|
|
*/
|
|
public static function select_and_sort_categories($select_element, $category_selected_code = '', $parent_code = null , $padding = '') {
|
|
|
|
$sql = "SELECT code, name, auth_course_child, auth_cat_child
|
|
FROM ".Database::get_main_table(TABLE_MAIN_CATEGORY)."
|
|
WHERE parent_id ".(is_null($parent_code) ? "IS NULL" : "='".Database::escape_string($parent_code)."'")."
|
|
ORDER BY code";
|
|
$res = Database::query($sql);
|
|
|
|
while ($cat = Database::fetch_array($res)) {
|
|
$params = $cat['auth_course_child'] == 'TRUE' ? '' : 'disabled';
|
|
$params .= ($cat['code'] == $category_selected_code) ? ' selected' : '';
|
|
$select_element->addOption($padding.'('.$cat['code'].') '.$cat['name'], $cat['code'], $params);
|
|
if ($cat['auth_cat_child']) {
|
|
self::select_and_sort_categories($select_element, $category_selected_code, $cat['code'], $padding.' - ');
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* check if course exists
|
|
* @param string course_code
|
|
* @param string whether to accept virtual course codes or not
|
|
* @return true if exists, false else
|
|
*/
|
|
public static function course_exists($course_code, $accept_virtual = false) {
|
|
if ($accept_virtual === true) {
|
|
$sql = 'SELECT 1 FROM '.Database::get_main_table(TABLE_MAIN_COURSE).' WHERE code="'.Database::escape_string($course_code).'" OR visual_code="'.Database::escape_string($course_code).'"';
|
|
} else {
|
|
$sql = 'SELECT 1 FROM '.Database::get_main_table(TABLE_MAIN_COURSE).' WHERE code="'.Database::escape_string($course_code).'"';
|
|
}
|
|
return Database::num_rows(Database::query($sql));
|
|
}
|
|
|
|
/**
|
|
* Send an email to tutor after the auth-suscription of a student in your course
|
|
* @author Carlos Vargas <carlos.vargas@dokeos.com>, Dokeos Latino
|
|
* @param int $user_id the id of the user
|
|
* @param string $course_code the course code
|
|
* @param string $send_to_tutor_also
|
|
* @return string we return the message that is displayed when the action is succesfull
|
|
*/
|
|
public static function email_to_tutor($user_id, $course_code, $send_to_tutor_also = false) {
|
|
|
|
if ($user_id != strval(intval($user_id))) {
|
|
return false;
|
|
}
|
|
|
|
$course_code = Database::escape_string($course_code);
|
|
|
|
$student = Database::fetch_array(Database::query("SELECT * FROM ".Database::get_main_table(TABLE_MAIN_USER)."
|
|
WHERE user_id='".$user_id."'"));
|
|
$information = self::get_course_information($course_code);
|
|
$name_course = $information['title'];
|
|
$sql = "SELECT * FROM ".Database::get_main_table(TABLE_MAIN_COURSE_USER)." WHERE course_code='".$course_code."'";
|
|
|
|
// TODO: Ivan: This is a mistake, please, have a look at it. Intention here is diffcult to be guessed.
|
|
//if ($send_to_tutor_also = true)
|
|
// Proposed change:
|
|
if ($send_to_tutor_also) {
|
|
//
|
|
$sql .= " AND tutor_id=1";
|
|
} else {
|
|
$sql .= " AND status=1";
|
|
}
|
|
|
|
$result = Database::query($sql);
|
|
while ($row = Database::fetch_array($result)) {
|
|
$tutor = Database::fetch_array(Database::query("SELECT * FROM ".Database::get_main_table(TABLE_MAIN_USER)."
|
|
WHERE user_id='".$row['user_id']."'"));
|
|
$emailto = $tutor['email'];
|
|
$emailsubject = get_lang('NewUserInTheCourse').': '.$name_course;
|
|
$emailbody = get_lang('Dear').': '. api_get_person_name($tutor['firstname'], $tutor['lastname'])."\n";
|
|
$emailbody .= get_lang('MessageNewUserInTheCourse').': '.$name_course."\n";
|
|
$emailbody .= get_lang('UserName').': '.$student['username']."\n";
|
|
if (api_is_western_name_order()) {
|
|
$emailbody .= get_lang('FirstName').': '.$student['firstname']."\n";
|
|
$emailbody .= get_lang('LastName').': '.$student['lastname']."\n";
|
|
} else {
|
|
$emailbody .= get_lang('LastName').': '.$student['lastname']."\n";
|
|
$emailbody .= get_lang('FirstName').': '.$student['firstname']."\n";
|
|
}
|
|
$emailbody .= get_lang('Email').': '.$student['email']."\n\n";
|
|
$recipient_name = api_get_person_name($tutor['firstname'], $tutor['lastname'], null, PERSON_NAME_EMAIL_ADDRESS);
|
|
$sender_name = api_get_person_name(api_get_setting('administratorName'), api_get_setting('administratorSurname'), null, PERSON_NAME_EMAIL_ADDRESS);
|
|
$email_admin = api_get_setting('emailAdministrator');
|
|
@api_mail($recipient_name, $emailto, $emailsubject, $emailbody, $sender_name,$email_admin);
|
|
}
|
|
}
|
|
|
|
public static function get_special_course_list() {
|
|
$tbl_course_field = Database :: get_main_table(TABLE_MAIN_COURSE_FIELD);
|
|
$tbl_course_field_value = Database :: get_main_table(TABLE_MAIN_COURSE_FIELD_VALUES);
|
|
|
|
//we filter the courses from the URL
|
|
$join_access_url = $where_access_url='';
|
|
if (api_get_multiple_access_url()) {
|
|
$access_url_id = api_get_current_access_url_id();
|
|
if ($access_url_id != -1) {
|
|
$tbl_url_course = Database :: get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
|
|
$join_access_url= "LEFT JOIN $tbl_url_course url_rel_course ON url_rel_course.course_code= tcfv.course_code ";
|
|
$where_access_url =" AND access_url_id = $access_url_id ";
|
|
}
|
|
}
|
|
|
|
// get course list auto-register
|
|
$sql = "SELECT DISTINCT(tcfv.course_code) FROM $tbl_course_field_value tcfv INNER JOIN $tbl_course_field tcf
|
|
ON tcfv.field_id = tcf.id $join_access_url
|
|
WHERE tcf.field_variable = 'special_course' AND tcfv.field_value = 1 $where_access_url";
|
|
$special_course_result = Database::query($sql);
|
|
$special_course_list = array();
|
|
|
|
if (Database::num_rows($special_course_result)>0) {
|
|
$special_course_list = array();
|
|
while ($result_row = Database::fetch_array($special_course_result)) {
|
|
$special_course_list[] = $result_row['course_code'];
|
|
}
|
|
}
|
|
return $special_course_list;
|
|
}
|
|
|
|
/**
|
|
* Get list of courses for a given user
|
|
* @param int user ID
|
|
* @param boolean Whether to include courses from session or not
|
|
* @return array List of codes and db names
|
|
* @author isaac flores paz
|
|
*/
|
|
public static function get_courses_list_by_user_id($user_id, $include_sessions = false) {
|
|
$user_id = intval($user_id);
|
|
$course_list = array();
|
|
$codes = array();
|
|
$tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$tbl_course_user = Database::get_main_table(TABLE_MAIN_COURSE_USER);
|
|
$tbl_user_course_category = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
|
|
|
|
$special_course_list = self::get_special_course_list();
|
|
|
|
$with_special_courses = $without_special_courses = '';
|
|
if (!empty($special_course_list)) {
|
|
$sc_string = '"'.implode('","',$special_course_list).'"';
|
|
$with_special_courses = ' course.code IN ('.$sc_string.')';
|
|
$without_special_courses = ' AND course.code NOT IN ('.$sc_string.')';
|
|
}
|
|
|
|
if (!empty($with_special_courses)) {
|
|
$sql = "SELECT DISTINCT(course.code), course.id as real_id
|
|
FROM ".$tbl_course_user." course_rel_user
|
|
LEFT JOIN ".$tbl_course." course
|
|
ON course.code = course_rel_user.course_code
|
|
LEFT JOIN ".$tbl_user_course_category." user_course_category
|
|
ON course_rel_user.user_course_cat = user_course_category.id
|
|
WHERE $with_special_courses
|
|
GROUP BY course.code
|
|
ORDER BY user_course_category.sort,course.title,course_rel_user.sort ASC";
|
|
$rs_special_course = Database::query($sql);
|
|
if (Database::num_rows($rs_special_course) > 0) {
|
|
while ($result_row = Database::fetch_array($rs_special_course)) {
|
|
$result_row['special_course'] = 1;
|
|
$course_list[] = $result_row;
|
|
$codes[] = $result_row['real_id'];
|
|
}
|
|
}
|
|
}
|
|
|
|
// get course list not auto-register. Use Distinct to avoid multiple
|
|
// entries when a course is assigned to a HRD (DRH) as watcher
|
|
$sql = "SELECT DISTINCT(course.code), course.id as real_id
|
|
FROM $tbl_course course
|
|
INNER JOIN $tbl_course_user cru ON course.code=cru.course_code
|
|
WHERE cru.user_id='$user_id' $without_special_courses";
|
|
|
|
$result = Database::query($sql);
|
|
|
|
if (Database::num_rows($result)) {
|
|
while ($row = Database::fetch_array($result, 'ASSOC')) {
|
|
$course_list[] = $row;
|
|
$codes[] = $row['real_id'];
|
|
}
|
|
}
|
|
|
|
if ($include_sessions === true) {
|
|
$sql = "SELECT DISTINCT(c.code), c.id as real_id
|
|
FROM ".Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER)." s, ".Database::get_main_table(TABLE_MAIN_COURSE)." c
|
|
WHERE id_user = $user_id AND s.course_code=c.code";
|
|
$r = Database::query($sql);
|
|
while ($row = Database::fetch_array($r, 'ASSOC')) {
|
|
if (!in_array($row['real_id'], $codes)) {
|
|
$course_list[] = $row;
|
|
}
|
|
}
|
|
}
|
|
return $course_list;
|
|
}
|
|
|
|
/**
|
|
* Get course ID from a given course directory name
|
|
* @param string Course directory (without any slash)
|
|
* @return string Course code, or false if not found
|
|
*/
|
|
public static function get_course_id_from_path($path) {
|
|
$path = Database::escape_string(str_replace('.', '', str_replace('/', '', $path)));
|
|
$res = Database::query("SELECT code FROM ".Database::get_main_table(TABLE_MAIN_COURSE)."
|
|
WHERE directory LIKE BINARY '$path'");
|
|
if ($res === false) {
|
|
return false;
|
|
}
|
|
if (Database::num_rows($res) != 1) {
|
|
return false;
|
|
}
|
|
$row = Database::fetch_array($res);
|
|
return $row['code'];
|
|
}
|
|
|
|
/**
|
|
* Get course code(s) from visual code
|
|
* @param string Visual code
|
|
* @return array List of codes for the given visual code
|
|
*/
|
|
public static function get_courses_info_from_visual_code($code) {
|
|
$result = array();
|
|
$sql_result = Database::query("SELECT * FROM ".Database::get_main_table(TABLE_MAIN_COURSE)."
|
|
WHERE visual_code = '".Database::escape_string($code)."'");
|
|
while ($virtual_course = Database::fetch_array($sql_result)) {
|
|
$result[] = $virtual_course;
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Get emails of tutors to course
|
|
* @param string Visual code
|
|
* @return array List of emails of tutors to course
|
|
* @author @author Carlos Vargas <carlos.vargas@dokeos.com>, Dokeos Latino
|
|
* */
|
|
public static function get_emails_of_tutors_to_course($code) {
|
|
$list = array();
|
|
$res = Database::query("SELECT user_id FROM ".Database::get_main_table(TABLE_MAIN_COURSE_USER)."
|
|
WHERE course_code='".Database::escape_string($code)."' AND status=1");
|
|
while ($list_users = Database::fetch_array($res)) {
|
|
$result = Database::query("SELECT * FROM ".Database::get_main_table(TABLE_MAIN_USER)."
|
|
WHERE user_id=".$list_users['user_id']);
|
|
while ($row_user = Database::fetch_array($result)){
|
|
$name_teacher = api_get_person_name($row_user['firstname'], $row_user['lastname']);
|
|
$list[] = array($row_user['email'] => $name_teacher);
|
|
}
|
|
}
|
|
return $list;
|
|
}
|
|
|
|
/**
|
|
* Get coachs' emails by session
|
|
* @param int session id
|
|
* @param string course code
|
|
* @return array array(email => name_tutor) by coach
|
|
* @author Carlos Vargas <carlos.vargas@dokeos.com>
|
|
*/
|
|
public static function get_email_of_tutor_to_session($session_id, $course_code) {
|
|
|
|
$tbl_session_course_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
|
|
$tbl_user = Database::get_main_table(TABLE_MAIN_USER);
|
|
$coachs_emails = array();
|
|
|
|
$course_code = Database::escape_string($course_code);
|
|
$session_id = intval($session_id);
|
|
|
|
$sql = "SELECT id_user FROM $tbl_session_course_user WHERE id_session='$session_id' AND course_code='$course_code' AND status =2";
|
|
$rs = Database::query($sql);
|
|
|
|
if (Database::num_rows($rs) > 0) {
|
|
|
|
$user_ids = array();
|
|
while ($row = Database::fetch_array($rs)) {
|
|
$user_ids[] = $row['id_user'];
|
|
}
|
|
|
|
$sql = "SELECT firstname, lastname, email FROM $tbl_user WHERE user_id IN (".implode(",",$user_ids).")";
|
|
$rs_user = Database::query($sql);
|
|
|
|
while ($row_emails = Database::fetch_array($rs_user)) {
|
|
//$name_tutor = api_get_person_name($row_emails['firstname'], $row_emails['lastname'], null, PERSON_NAME_EMAIL_ADDRESS);
|
|
$mail_tutor = array('email' => $row_emails['email'], 'complete_name' => api_get_person_name($row_emails['firstname'], $row_emails['lastname']));
|
|
$coachs_emails[] = $mail_tutor;
|
|
}
|
|
}
|
|
return $coachs_emails;
|
|
}
|
|
|
|
/**
|
|
* Creates a new extra field for a given course
|
|
* @param string Field's internal variable name
|
|
* @param int Field's type
|
|
* @param string Field's language var name
|
|
* @return int new extra field id
|
|
*/
|
|
public static function create_course_extra_field($fieldvarname, $fieldtype, $fieldtitle) {
|
|
// database table definition
|
|
$t_cfv = Database::get_main_table(TABLE_MAIN_COURSE_FIELD_VALUES);
|
|
$t_cf = Database::get_main_table(TABLE_MAIN_COURSE_FIELD);
|
|
$fieldvarname = Database::escape_string($fieldvarname);
|
|
$fieldtitle = Database::escape_string($fieldtitle);
|
|
$fieldtype = (int)$fieldtype;
|
|
$time = time();
|
|
$sql_field = "SELECT id FROM $t_cf WHERE field_variable = '$fieldvarname'";
|
|
$res_field = Database::query($sql_field);
|
|
|
|
$r_field = Database::fetch_row($res_field);
|
|
|
|
if (Database::num_rows($res_field) > 0) {
|
|
return $r_field[0];
|
|
}
|
|
|
|
// save new fieldlabel into course_field table
|
|
$sql = "SELECT MAX(field_order) FROM $t_cf";
|
|
$res = Database::query($sql);
|
|
|
|
$order = 0;
|
|
if (Database::num_rows($res) > 0) {
|
|
$row = Database::fetch_row($res);
|
|
$order = $row[0] + 1;
|
|
}
|
|
|
|
$sql = "INSERT INTO $t_cf
|
|
SET field_type = '$fieldtype',
|
|
field_variable = '$fieldvarname',
|
|
field_display_text = '$fieldtitle',
|
|
field_order = '$order',
|
|
tms = FROM_UNIXTIME($time)";
|
|
Database::query($sql);
|
|
|
|
return Database::insert_id();
|
|
}
|
|
|
|
/**
|
|
* Updates course attribute. Note that you need to check that your attribute is valid before you use this function
|
|
*
|
|
* @param int Course id
|
|
* @param string Attribute name
|
|
* @param string Attribute value
|
|
* @return bool True if attribute was successfully updated, false if course was not found or attribute name is invalid
|
|
*/
|
|
public static function update_attribute($id, $name, $value) {
|
|
$id = (int)$id;
|
|
$table = Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$sql = "UPDATE $table SET $name = '".Database::escape_string($value)."' WHERE id = '$id';";
|
|
return Database::query($sql);
|
|
}
|
|
|
|
/**
|
|
* Update course attributes. Will only update attributes with a non-empty value. Note that you NEED to check that your attributes are valid before using this function
|
|
*
|
|
* @param int Course id
|
|
* @param array Associative array with field names as keys and field values as values
|
|
* @return bool True if update was successful, false otherwise
|
|
*/
|
|
public static function update_attributes($id, $attributes) {
|
|
$id = (int)$id;
|
|
$table = Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$sql = "UPDATE $table SET ";
|
|
$i = 0;
|
|
foreach($attributes as $name => $value) {
|
|
if($value != '') {
|
|
if($i > 0) {
|
|
$sql .= ", ";
|
|
}
|
|
$sql .= " $name = '".Database::escape_string($value)."'";
|
|
$i++;
|
|
}
|
|
}
|
|
$sql .= " WHERE id = '$id';";
|
|
return Database::query($sql);
|
|
}
|
|
|
|
|
|
/**
|
|
* Update an extra field value for a given course
|
|
* @param integer Course ID
|
|
* @param string Field variable name
|
|
* @param string Field value
|
|
* @return boolean true if field updated, false otherwise
|
|
*/
|
|
public static function update_course_extra_field_value($course_code, $fname, $fvalue = '') {
|
|
|
|
$t_cfv = Database::get_main_table(TABLE_MAIN_COURSE_FIELD_VALUES);
|
|
$t_cf = Database::get_main_table(TABLE_MAIN_COURSE_FIELD);
|
|
$fname = Database::escape_string($fname);
|
|
$course_code = Database::escape_string($course_code);
|
|
$fvalues = '';
|
|
if (is_array($fvalue)) {
|
|
foreach ($fvalue as $val) {
|
|
$fvalues .= Database::escape_string($val).';';
|
|
}
|
|
if (!empty($fvalues)) {
|
|
$fvalues = substr($fvalues, 0, -1);
|
|
}
|
|
} else {
|
|
$fvalues = Database::escape_string($fvalue);
|
|
}
|
|
|
|
$sqlcf = "SELECT * FROM $t_cf WHERE field_variable='$fname'";
|
|
$rescf = Database::query($sqlcf);
|
|
if (Database::num_rows($rescf) == 1) {
|
|
// Ok, the field exists
|
|
// Check if enumerated field, if the option is available
|
|
$rowcf = Database::fetch_array($rescf);
|
|
|
|
$tms = time();
|
|
$sqlcfv = "SELECT * FROM $t_cfv WHERE course_code = '$course_code' AND field_id = '".$rowcf['id']."' ORDER BY id";
|
|
$rescfv = Database::query($sqlcfv);
|
|
$n = Database::num_rows($rescfv);
|
|
if ($n > 1) {
|
|
//problem, we already have to values for this field and user combination - keep last one
|
|
while ($rowcfv = Database::fetch_array($rescfv)) { // See the TODO note below.
|
|
if ($n > 1) {
|
|
$sqld = "DELETE FROM $t_cfv WHERE id = ".$rowcfv['id'];
|
|
$resd = Database::query($sqld);
|
|
$n--;
|
|
}
|
|
$rowcfv = Database::fetch_array($rescfv);
|
|
if ($rowcfv['field_value'] != $fvalues) {
|
|
$sqlu = "UPDATE $t_cfv SET field_value = '$fvalues', tms = FROM_UNIXTIME($tms) WHERE id = ".$rowcfv['id'];
|
|
$resu = Database::query($sqlu);
|
|
return ($resu ? true : false);
|
|
}
|
|
return true; // TODO: Sure exit from the function occures in this "while" cycle. Logic should checked. Maybe "if" instead of "while"? It is not clear...
|
|
}
|
|
} elseif ($n == 1) {
|
|
//we need to update the current record
|
|
$rowcfv = Database::fetch_array($rescfv);
|
|
if ($rowcfv['field_value'] != $fvalues) {
|
|
$sqlu = "UPDATE $t_cfv SET field_value = '$fvalues', tms = FROM_UNIXTIME($tms) WHERE id = ".$rowcfv['id'];
|
|
//error_log('UM::update_extra_field_value: '.$sqlu);
|
|
$resu = Database::query($sqlu);
|
|
return ($resu ? true : false);
|
|
}
|
|
return true;
|
|
} else {
|
|
$sqli = "INSERT INTO $t_cfv (course_code,field_id,field_value,tms) " .
|
|
"VALUES ('$course_code',".$rowcf['id'].",'$fvalues',FROM_UNIXTIME($tms))";
|
|
//error_log('UM::update_extra_field_value: '.$sqli);
|
|
$resi = Database::query($sqli);
|
|
return ($resi ? true : false);
|
|
}
|
|
} else {
|
|
return false; //field not found
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get the course id of an course by the database name
|
|
* @param string The database name
|
|
* @return string The course id
|
|
*/
|
|
public static function get_course_id_by_database_name($db_name) {
|
|
return Database::result(Database::query('SELECT code FROM '.Database::get_main_table(TABLE_MAIN_COURSE).
|
|
' WHERE db_name="'.Database::escape_string($db_name).'"'), 0, 'code');
|
|
}
|
|
|
|
public static function get_session_category_id_by_session_id($session_id) {
|
|
return Database::result(Database::query('SELECT sc.id session_category
|
|
FROM '.Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY).' sc
|
|
INNER JOIN '.Database::get_main_table(TABLE_MAIN_SESSION).' s
|
|
ON sc.id=s.session_category_id WHERE s.id="'.Database::escape_string($session_id).'"'),
|
|
0, 'session_category');
|
|
}
|
|
|
|
/**
|
|
* Get the course id of an course by the database name
|
|
* @param string The database name
|
|
* @return string The course id
|
|
*/
|
|
public static function get_course_extra_field_list($code) {
|
|
$tbl_course_field = Database::get_main_table(TABLE_MAIN_COURSE_FIELD);
|
|
$tbl_course_field_value = Database::get_main_table(TABLE_MAIN_COURSE_FIELD_VALUES);
|
|
$sql_field = "SELECT id, field_type, field_variable, field_display_text, field_default_value
|
|
FROM $tbl_course_field WHERE field_visible = '1' ";
|
|
$res_field = Database::query($sql_field);
|
|
$extra_fields = array();
|
|
while($rowcf = Database::fetch_array($res_field)) {
|
|
$extra_field_id = $rowcf['id'];
|
|
$sql_field_value = "SELECT field_value FROM $tbl_course_field_value WHERE course_code = '$code' AND field_id = '$extra_field_id' ";
|
|
$res_field_value = Database::query($sql_field_value);
|
|
if(Database::num_rows($res_field_value) > 0 ) {
|
|
$r_field_value = Database::fetch_row($res_field_value);
|
|
$rowcf['extra_field_value'] = $r_field_value[0];
|
|
}
|
|
$extra_fields[] = $rowcf;
|
|
}
|
|
return $extra_fields;
|
|
}
|
|
|
|
/**
|
|
* Gets the value of a course extra field. Returns null if it was not found
|
|
*
|
|
* @param string Name of the extra field
|
|
* @param string Course code
|
|
* @return string Value
|
|
*/
|
|
public static function get_course_extra_field_value($field_name, $code) {
|
|
$tbl_course_field = Database::get_main_table(TABLE_MAIN_COURSE_FIELD);
|
|
$tbl_course_field_value = Database::get_main_table(TABLE_MAIN_COURSE_FIELD_VALUES);
|
|
$sql = "SELECT id FROM $tbl_course_field WHERE field_visible = '1' AND field_variable = '$field_name';";
|
|
$res = Database::query($sql);
|
|
$row = Database::fetch_object($res);
|
|
if(!$row) {
|
|
return null;
|
|
} else {
|
|
$sql_field_value = "SELECT field_value FROM $tbl_course_field_value WHERE course_code = '$code' AND field_id = '{$row->id}';";
|
|
$res_field_value = Database::query($sql_field_value);
|
|
$row_field_value = Database::fetch_object($res_field_value);
|
|
if(!$row_field_value) {
|
|
return null;
|
|
} else {
|
|
return $row_field_value['field_value'];
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Get the database name of a course by the code
|
|
* @param string The course code
|
|
* @return string The database name
|
|
*/
|
|
public static function get_name_database_course($course_code) {
|
|
return Database::result(Database::query('SELECT db_name FROM '.Database::get_main_table(TABLE_MAIN_COURSE).
|
|
' WHERE code="'.Database::escape_string($course_code).'"'), 0, 'db_name');
|
|
}
|
|
|
|
/**
|
|
* Lists details of the course description
|
|
* @param array The course description
|
|
* @param string The encoding
|
|
* @param bool If true is displayed if false is hidden
|
|
* @return string The course description in html
|
|
*/
|
|
public static function get_details_course_description_html($descriptions, $charset, $action_show = true) {
|
|
if (isset($descriptions) && count($descriptions) > 0) {
|
|
$data = '';
|
|
foreach ($descriptions as $id => $description) {
|
|
$data .= '<div class="sectiontitle">';
|
|
if (api_is_allowed_to_edit() && $action_show) {
|
|
//delete
|
|
$data .= '<a href="'.api_get_self().'?'.api_get_cidreq().'&action=delete&description_id='.$description->id.'" onclick="javascript:if(!confirm(\''.addslashes(api_htmlentities(get_lang('ConfirmYourChoice'), ENT_QUOTES, $charset)).'\')) return false;">';
|
|
$data .= Display::return_icon('delete.gif', get_lang('Delete'), array('style' => 'vertical-align:middle;float:right;'));
|
|
$data .= '</a> ';
|
|
//edit
|
|
$data .= '<a href="'.api_get_self().'?'.api_get_cidreq().'&description_id='.$description->id.'">';
|
|
$data .= Display::return_icon('edit.png', get_lang('Edit'), array('style' => 'vertical-align:middle;float:right; padding-right:4px;'), ICON_SIZE_SMALL);
|
|
$data .= '</a> ';
|
|
}
|
|
$data .= $description->title;
|
|
$data .= '</div>';
|
|
$data .= '<div class="sectioncomment">';
|
|
$data .= text_filter($description->content);
|
|
$data .= '</div>';
|
|
}
|
|
} else {
|
|
$data .= '<em>'.get_lang('ThisCourseDescriptionIsEmpty').'</em>';
|
|
}
|
|
|
|
return $data;
|
|
}
|
|
|
|
/**
|
|
* Returns the details of a course category
|
|
*
|
|
* @param string Category code
|
|
* @return array Course category
|
|
*/
|
|
public static function get_course_category($code) {
|
|
$table_categories = Database::get_main_table(TABLE_MAIN_CATEGORY);
|
|
$sql = "SELECT * FROM $table_categories WHERE code = '$code';";
|
|
return Database::fetch_array(Database::query($sql));
|
|
}
|
|
|
|
/*
|
|
==============================================================================
|
|
DEPRECATED METHODS
|
|
==============================================================================
|
|
*/
|
|
|
|
/**
|
|
* This code creates a select form element to let the user
|
|
* choose a real course to link to.
|
|
*
|
|
* A good non-display library should not use echo statements, but just return text/html
|
|
* so users of the library can choose when to display.
|
|
*
|
|
* We display the course code, but internally store the course id.
|
|
*
|
|
* @param boolean $has_size, true the select tag gets a size element, false it stays a dropdownmenu
|
|
* @param boolean $only_current_user_courses, true only the real courses of which the
|
|
* current user is course admin are displayed, false all real courses are shown.
|
|
* @param string $element_name the name of the select element
|
|
* @return a string containing html code for a form select element.
|
|
* @deprecated Function not in use
|
|
*/
|
|
public static function get_real_course_code_select_html($element_name, $has_size = true, $only_current_user_courses = true, $user_id) {
|
|
if ($only_current_user_courses) {
|
|
$real_course_list = self::get_real_course_list_of_user_as_course_admin($user_id);
|
|
} else {
|
|
$real_course_list = self::get_real_course_list();
|
|
}
|
|
|
|
if ($has_size) {
|
|
$size_element = "size=\"".SELECT_BOX_SIZE."\"";
|
|
} else {
|
|
$size_element = "";
|
|
}
|
|
$html_code = "<select name=\"$element_name\" $size_element >\n";
|
|
foreach ($real_course_list as $real_course) {
|
|
$course_code = $real_course["code"];
|
|
$html_code .= "<option value=\"".$course_code."\">";
|
|
$html_code .= $course_code;
|
|
$html_code .= "</option>\n";
|
|
}
|
|
$html_code .= "</select>\n";
|
|
|
|
return $html_code;
|
|
}
|
|
|
|
/**
|
|
* Get count rows of a table inside a course database
|
|
* @param string The table of which the rows should be counted
|
|
* @param int optionally count rows by session id
|
|
* @return int The number of rows in the given table.
|
|
*/
|
|
public static function count_rows_course_table($table, $session_id = '', $course_id = null) {
|
|
$condition_session = '';
|
|
if ($session_id !== '') {
|
|
$session_id = intval($session_id);
|
|
$condition_session = " AND session_id = '$session_id' ";
|
|
}
|
|
if (!empty($course_id)) {
|
|
$course_id = intval($course_id);
|
|
} else {
|
|
$course_id = api_get_course_int_id();
|
|
}
|
|
$condition_session .= " AND c_id = '$course_id' ";
|
|
|
|
$sql = "SELECT COUNT(*) AS n FROM $table WHERE 1=1 $condition_session ";
|
|
$rs = Database::query($sql);
|
|
$row = Database::fetch_row($rs);
|
|
return $row[0];
|
|
}
|
|
|
|
/**
|
|
* Subscribes courses to human resource manager (Dashboard feature)
|
|
* @param int Human Resource Manager id
|
|
* @param array Courses code
|
|
* @param int Relation type
|
|
**/
|
|
public static function suscribe_courses_to_hr_manager($hr_manager_id,$courses_list) {
|
|
global $_configuration;
|
|
|
|
// Database Table Definitions
|
|
$tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$tbl_course_rel_user = Database::get_main_table(TABLE_MAIN_COURSE_USER);
|
|
$tbl_course_rel_access_url = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
|
|
|
|
$hr_manager_id = intval($hr_manager_id);
|
|
$affected_rows = 0;
|
|
|
|
//Deleting assigned courses to hrm_id
|
|
if ($_configuration['multiple_access_urls']) {
|
|
$sql = "SELECT s.course_code FROM $tbl_course_rel_user s INNER JOIN $tbl_course_rel_access_url a ON (a.course_code = s.course_code) WHERE user_id = $hr_manager_id AND relation_type=".COURSE_RELATION_TYPE_RRHH." AND access_url_id = ".api_get_current_access_url_id()."";
|
|
} else {
|
|
$sql = "SELECT course_code FROM $tbl_course_rel_user WHERE user_id = $hr_manager_id AND relation_type=".COURSE_RELATION_TYPE_RRHH." ";
|
|
}
|
|
$result = Database::query($sql);
|
|
if (Database::num_rows($result) > 0) {
|
|
while ($row = Database::fetch_array($result)) {
|
|
$sql = "DELETE FROM $tbl_course_rel_user WHERE course_code = '{$row['course_code']}' AND user_id = $hr_manager_id AND relation_type=".COURSE_RELATION_TYPE_RRHH." ";
|
|
Database::query($sql);
|
|
}
|
|
}
|
|
|
|
// inserting new courses list
|
|
if (is_array($courses_list)) {
|
|
foreach ($courses_list as $course_code) {
|
|
$course_code = Database::escape_string($course_code);
|
|
$insert_sql = "INSERT IGNORE INTO $tbl_course_rel_user(course_code, user_id, status, relation_type) VALUES('$course_code', $hr_manager_id, '".DRH."', '".COURSE_RELATION_TYPE_RRHH."')";
|
|
Database::query($insert_sql);
|
|
if (Database::affected_rows()) {
|
|
$affected_rows++;
|
|
}
|
|
}
|
|
}
|
|
return $affected_rows;
|
|
|
|
}
|
|
|
|
/**
|
|
* get courses followed by human resources manager
|
|
* @param int human resources manager id
|
|
* @return array courses
|
|
*/
|
|
public static function get_courses_followed_by_drh($user_id) {
|
|
// Database Table Definitions
|
|
$tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$tbl_course_rel_user = Database::get_main_table(TABLE_MAIN_COURSE_USER);
|
|
$tbl_course_rel_access_url = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
|
|
|
|
$user_id = intval($user_id);
|
|
$assigned_courses_to_hrm = array();
|
|
|
|
if (api_get_multiple_access_url()) {
|
|
$sql = "SELECT *, id as real_id FROM $tbl_course c
|
|
INNER JOIN $tbl_course_rel_user cru ON (cru.course_code = c.code) LEFT JOIN $tbl_course_rel_access_url a ON (a.course_code = c.code) WHERE cru.user_id = '$user_id' AND status = ".DRH." AND relation_type = '".COURSE_RELATION_TYPE_RRHH."' AND access_url_id = ".api_get_current_access_url_id()."";
|
|
} else {
|
|
$sql = "SELECT *, id as real_id FROM $tbl_course c
|
|
INNER JOIN $tbl_course_rel_user cru ON cru.course_code = c.code AND cru.user_id = '$user_id' AND status = ".DRH." AND relation_type = '".COURSE_RELATION_TYPE_RRHH."' ";
|
|
}
|
|
$rs_assigned_courses = Database::query($sql);
|
|
if (Database::num_rows($rs_assigned_courses) > 0) {
|
|
while ($row_assigned_courses = Database::fetch_array($rs_assigned_courses)) {
|
|
$assigned_courses_to_hrm[$row_assigned_courses['code']] = $row_assigned_courses;
|
|
}
|
|
}
|
|
return $assigned_courses_to_hrm;
|
|
}
|
|
|
|
/**
|
|
* check if a course is special (autoregister)
|
|
* @param string course code
|
|
*/
|
|
public static function is_special_course($course_code){
|
|
$tbl_course_field_value = Database::get_main_table(TABLE_MAIN_COURSE_FIELD_VALUES);
|
|
$tbl_course_field = Database::get_main_table(TABLE_MAIN_COURSE_FIELD);
|
|
$is_special = false;
|
|
$sql = "SELECT course_code FROM $tbl_course_field_value tcfv INNER JOIN $tbl_course_field tcf ON " .
|
|
" tcfv.field_id = tcf.id WHERE tcf.field_variable = 'special_course' AND tcfv.field_value = 1 AND course_code='$course_code'";
|
|
$result = Database::query($sql);
|
|
$num_rows = Database::num_rows($result);
|
|
if ($num_rows > 0){
|
|
$is_special = true;
|
|
|
|
}
|
|
return $is_special;
|
|
}
|
|
|
|
/**
|
|
* Update course picture
|
|
* @param string Course code
|
|
* @param string File name
|
|
* @param string The full system name of the image from which course picture will be created.
|
|
* @return bool Returns the resulting. In case of internal error or negative validation returns FALSE.
|
|
*/
|
|
public static function update_course_picture($course_code, $filename, $source_file = null) {
|
|
|
|
$course_info = api_get_course_info($course_code);
|
|
$store_path = api_get_path(SYS_COURSE_PATH).$course_info['path']; // course path
|
|
$course_image = $store_path.'/course-pic.png'; // image name for courses
|
|
$course_medium_image = $store_path.'/course-pic85x85.png';
|
|
//$extension = strtolower(substr(strrchr($filename, '.'), 1));
|
|
|
|
if (file_exists($course_image)) {
|
|
@unlink($course_image);
|
|
}
|
|
if (file_exists($course_medium_image)) {
|
|
@unlink($course_medium_image);
|
|
}
|
|
|
|
$my_course_image = new Image($source_file);
|
|
$result = $my_course_image->send_image($course_image, -1, 'png');
|
|
//Redimension image to 100x85
|
|
if ($result) {
|
|
$medium = new Image($course_image);
|
|
//$picture_infos = $medium->get_image_size();
|
|
$medium->resize(100, 85, 0, false);
|
|
$medium->send_image($store_path.'/course-pic85x85.png', -1, 'png');
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* @deprecated See CourseManager::course_code_exists()
|
|
*/
|
|
public static function is_existing_course_code($wanted_course_code) {
|
|
return self::course_code_exists($wanted_course_code);
|
|
}
|
|
|
|
/**
|
|
* Builds the course block in user_portal.php
|
|
* @todo use Twig
|
|
*/
|
|
public static function course_item_html($params, $is_sub_content = false) {
|
|
$html = '';
|
|
$class = "well";
|
|
if ($is_sub_content) {
|
|
$class = "course_item";
|
|
}
|
|
$html .= '<div class="'.$class.'">';
|
|
$html .= '<div class="row">';
|
|
$html .= '<div class="span7">';
|
|
$html .= ' <div class="row">';
|
|
$html .= '<div class="span1">';
|
|
if (!empty($params['link'])) {
|
|
$html .= '<a class="thumbnail" href="'.$params['link'].'">';
|
|
$html .= $params['icon'];
|
|
$html .= '</a>';
|
|
} else {
|
|
$html .= '<div class="thumbnail">';
|
|
$html .= $params['icon'];
|
|
$html .= '</div>';
|
|
}
|
|
|
|
$html .= '</div>';
|
|
|
|
$html .= '<div class="span6">';
|
|
$html .='<h3>'.$params['title'].$params['notifications'].'</h3> ';
|
|
|
|
if (!empty($params['subtitle'])) {
|
|
$html .= '<small>'.$params['subtitle'].'</small>';
|
|
}
|
|
if (!empty($params['teachers'])) {
|
|
$html .= '<h5>'.Display::return_icon('teacher.png', get_lang('Teacher'), array(), ICON_SIZE_TINY).$params['teachers'].'</h5>';
|
|
}
|
|
if (!empty($params['coaches'])) {
|
|
$html .= '<h5>'.Display::return_icon('teacher.png', get_lang('Coach'), array(), ICON_SIZE_TINY).$params['coaches'].'</h5>';
|
|
}
|
|
|
|
|
|
$html .= '</div>';
|
|
$html .= '</div>';
|
|
|
|
$html .= '</div>';
|
|
|
|
$html .= '<div class="span1 pull-right">'.$params['right_actions'].'</div>';
|
|
$html .= '</div>';
|
|
$html .= '</div>';
|
|
return $html;
|
|
}
|
|
|
|
|
|
public static function course_item_parent($main_content, $sub_content, $sub_sub_content = null) {
|
|
return '<div class="well">'.$main_content.$sub_content.$sub_sub_content.'</div>';
|
|
}
|
|
|
|
/**
|
|
* Display special courses (and only these) as several HTML divs of class userportal-course-item
|
|
*
|
|
* Special courses are courses that stick on top of the list and are "auto-registerable"
|
|
* in the sense that any user clicking them is registered as a student
|
|
* @param int User id
|
|
* @param bool Whether to show the document quick-loader or not
|
|
* @return void
|
|
*/
|
|
public static function display_special_courses($user_id, $load_dirs = false) {
|
|
$user_id = intval($user_id);
|
|
$tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$tbl_course_user = Database::get_main_table(TABLE_MAIN_COURSE_USER);
|
|
|
|
$special_course_list = self::get_special_course_list();
|
|
|
|
$with_special_courses = $without_special_courses = '';
|
|
if (!empty($special_course_list)) {
|
|
$with_special_courses = ' course.code IN ("'.implode('","',$special_course_list).'")';
|
|
}
|
|
|
|
if (!empty($with_special_courses)) {
|
|
$sql = "SELECT course.id, course.code, course.subscribe subscr, course.unsubscribe unsubscr, course_rel_user.status status,
|
|
course_rel_user.sort sort, course_rel_user.user_course_cat user_course_cat, course_rel_user.user_id
|
|
FROM $tbl_course course
|
|
LEFT JOIN $tbl_course_user course_rel_user ON course.code = course_rel_user.course_code AND course_rel_user.user_id = '$user_id'
|
|
WHERE $with_special_courses group by course.code";
|
|
|
|
$rs_special_course = Database::query($sql);
|
|
$number_of_courses = Database::num_rows($rs_special_course);
|
|
$key = 0;
|
|
|
|
$html = '';
|
|
|
|
if ($number_of_courses > 0) {
|
|
while ($course = Database::fetch_array($rs_special_course)) {
|
|
$course_info = api_get_course_info($course['code']);
|
|
$params = array();
|
|
// Get notifications.
|
|
//$course['id_session'] = null;
|
|
//$course['status'] = $course['status'];
|
|
|
|
$course_info['id_session'] = null;
|
|
$course_info['status'] = $course['status'];
|
|
$show_notification = Display::show_notification($course_info);
|
|
|
|
if (empty($course['user_id'])) {
|
|
$course['status'] = STUDENT;
|
|
}
|
|
|
|
$params['icon'] = Display::return_icon('blackboard.png', $course_info['title'], array(), ICON_SIZE_LARGE);
|
|
|
|
$params['right_actions'] = '';
|
|
if (api_is_platform_admin()) {
|
|
if ($load_dirs) {
|
|
$params['right_actions'] .= '<a id="document_preview_'.$course['real_id'].'_0" class="document_preview" href="javascript:void(0);">'.Display::return_icon('folder.png', get_lang('Documents'), array('align' => 'absmiddle'),ICON_SIZE_SMALL).'</a>';
|
|
$params['right_actions'] .= '<a href="'.api_get_path(WEB_CODE_PATH).'course_info/infocours.php?cidReq='.$course['code'].'">'.Display::return_icon('edit.png', get_lang('Edit'), array('align' => 'absmiddle'),ICON_SIZE_SMALL).'</a>';
|
|
$params['right_actions'] .= Display::div('', array('id' => 'document_result_'.$course['real_id'].'_0', 'class'=>'document_preview_container'));
|
|
} else {
|
|
$params['right_actions'] .= '<a href="'.api_get_path(WEB_CODE_PATH).'course_info/infocours.php?cidReq='.$course['code'].'">'.Display::return_icon('edit.png', get_lang('Edit'), array('align' => 'absmiddle'),ICON_SIZE_SMALL).'</a>';
|
|
}
|
|
if ($course['status'] == COURSEMANAGER) {
|
|
//echo Display::return_icon('teachers.gif', get_lang('Status').': '.get_lang('Teacher'), array('style'=>'width: 11px; height: 11px;'));
|
|
}
|
|
} else {
|
|
if ($course_info['visibility'] != COURSE_VISIBILITY_CLOSED) {
|
|
if ($load_dirs) {
|
|
$params['right_actions'] .= '<a id="document_preview_'.$course['real_id'].'_0" class="document_preview" href="javascript:void(0);">'.Display::return_icon('folder.png', get_lang('Documents'), array('align' => 'absmiddle'),ICON_SIZE_SMALL).'</a>';
|
|
$params['right_actions'] .= Display::div('', array('id' => 'document_result_'.$course['real_id'].'_0', 'class'=>'document_preview_container'));
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($course_info['visibility'] != COURSE_VISIBILITY_CLOSED || $course['status'] == COURSEMANAGER) {
|
|
$course_title = '<a href="'.api_get_path(WEB_COURSE_PATH).$course_info['path'].'/?id_session=0&autoreg=1">'.$course_info['title'].'</a>';
|
|
} else {
|
|
$course_title = $course_info['title']." ".Display::tag('span',get_lang('CourseClosed'), array('class'=>'item_closed'));
|
|
}
|
|
|
|
if (api_get_setting('display_coursecode_in_courselist') == 'true') {
|
|
$course_title .= ' ('.$course_info['visual_code'].') ';
|
|
}
|
|
if (api_get_setting('display_teacher_in_courselist') == 'true') {
|
|
$params['teachers'] = CourseManager::get_teacher_list_from_course_code_to_string($course['code'], self::USER_SEPARATOR, true);
|
|
}
|
|
$course_title .= ' ';
|
|
$course_title .= Display::return_icon('klipper.png', get_lang('CourseAutoRegister'));
|
|
|
|
$params['title'] = $course_title;
|
|
$params['link'] = api_get_path(WEB_COURSE_PATH).$course_info['path'].'/?id_session=0&autoreg=1';
|
|
|
|
if ($course_info['visibility'] != COURSE_VISIBILITY_CLOSED) {
|
|
$params['notifications'] = $show_notification;
|
|
}
|
|
|
|
$html .= self::course_item_html($params, false);
|
|
$key++;
|
|
}
|
|
}
|
|
}
|
|
return $html;
|
|
}
|
|
|
|
/**
|
|
* Display courses (without special courses) as several HTML divs
|
|
* of course categories, as class userportal-catalog-item.
|
|
* @uses display_courses_in_category() to display the courses themselves
|
|
* @param int user id
|
|
* @param bool Whether to show the document quick-loader or not
|
|
* @return void
|
|
*/
|
|
public static function display_courses($user_id, $load_dirs = false) {
|
|
$user_id = intval($user_id);
|
|
if (empty($user_id)) {
|
|
$user_id = api_get_user_id();
|
|
}
|
|
|
|
// Step 1: We get all the categories of the user
|
|
$tucc = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
|
|
$sql = "SELECT id, title FROM $tucc WHERE user_id='".$user_id."' ORDER BY sort ASC";
|
|
$result = Database::query($sql);
|
|
while ($row = Database::fetch_array($result)) {
|
|
$params = array();
|
|
// We simply display the title of the category.
|
|
$params['icon'] = Display::return_icon('folder_yellow.png', $row['title'], array(), ICON_SIZE_LARGE);
|
|
$params['title'] = $row['title'];
|
|
$html .= self::course_item_parent(self::course_item_html($params, true), self :: display_courses_in_category($row['id'], $load_dirs));
|
|
}
|
|
|
|
// Step 2: We display the course without a user category.
|
|
$html .= self :: display_courses_in_category(0, $load_dirs);
|
|
return $html;
|
|
}
|
|
|
|
/**
|
|
* Display courses inside a category (without special courses) as HTML dics of
|
|
* class userportal-course-item.
|
|
* @param int User category id
|
|
* @param bool Whether to show the document quick-loader or not
|
|
* @return void
|
|
*/
|
|
public static function display_courses_in_category($user_category_id, $load_dirs = false) {
|
|
$user_id = api_get_user_id();
|
|
// Table definitions
|
|
$TABLECOURS = Database :: get_main_table(TABLE_MAIN_COURSE);
|
|
$TABLECOURSUSER = Database :: get_main_table(TABLE_MAIN_COURSE_USER);
|
|
$TABLE_ACCESS_URL_REL_COURSE = Database :: get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
|
|
$current_url_id = api_get_current_access_url_id();
|
|
|
|
// Get course list auto-register
|
|
$special_course_list = self::get_special_course_list();
|
|
|
|
$without_special_courses = '';
|
|
if (!empty($special_course_list)) {
|
|
$without_special_courses = ' AND course.code NOT IN ("'.implode('","',$special_course_list).'")';
|
|
}
|
|
|
|
//AND course_rel_user.relation_type<>".COURSE_RELATION_TYPE_RRHH."
|
|
$sql = "SELECT course.id, course.title, course.code, course.subscribe subscr, course.unsubscribe unsubscr, course_rel_user.status status,
|
|
course_rel_user.sort sort, course_rel_user.user_course_cat user_course_cat
|
|
FROM $TABLECOURS course,
|
|
$TABLECOURSUSER course_rel_user, ".$TABLE_ACCESS_URL_REL_COURSE." url
|
|
WHERE course.code = course_rel_user.course_code AND url.course_code = course.code AND
|
|
course_rel_user.user_id = '".$user_id."' AND
|
|
course_rel_user.user_course_cat='".$user_category_id."' $without_special_courses ";
|
|
// If multiple URL access mode is enabled, only fetch courses
|
|
// corresponding to the current URL.
|
|
if (api_get_multiple_access_url() && $current_url_id != -1) {
|
|
$sql .= " AND url.course_code=course.code AND access_url_id='".$current_url_id."'";
|
|
}
|
|
// Use user's classification for courses (if any).
|
|
$sql .= " ORDER BY course_rel_user.user_course_cat, course_rel_user.sort ASC";
|
|
|
|
$result = Database::query($sql);
|
|
$status_icon = '';
|
|
$html = '';
|
|
|
|
$course_list = array();
|
|
|
|
// Browse through all courses.
|
|
while ($course = Database::fetch_array($result)) {
|
|
$course_info = api_get_course_info($course['code']);
|
|
//$course['id_session'] = null;
|
|
$course_info['id_session'] = null;
|
|
$course_info['status'] = $course['status'];
|
|
|
|
//In order to avoid doubles
|
|
if (in_array($course_info['real_id'], $course_list)) {
|
|
continue;
|
|
} else {
|
|
$course_list[] = $course_info['real_id'];
|
|
}
|
|
|
|
// For each course, get if there is any notification icon to show
|
|
// (something that would have changed since the user's last visit).
|
|
$show_notification = Display :: show_notification($course_info);
|
|
|
|
// New code displaying the user's status in respect to this course.
|
|
$status_icon = Display::return_icon('blackboard.png', $course_info['title'], array(), ICON_SIZE_LARGE);
|
|
|
|
$params = array();
|
|
$params['right_actions'] = '';
|
|
|
|
if (api_is_platform_admin()) {
|
|
if ($load_dirs) {
|
|
$params['right_actions'] .= '<a id="document_preview_'.$course_info['real_id'].'_0" class="document_preview" href="javascript:void(0);">'.Display::return_icon('folder.png', get_lang('Documents'), array('align' => 'absmiddle'),ICON_SIZE_SMALL).'</a>';
|
|
$params['right_actions'] .= '<a href="'.api_get_path(WEB_CODE_PATH).'course_info/infocours.php?cidReq='.$course['code'].'">'.Display::return_icon('edit.png', get_lang('Edit'), array('align' => 'absmiddle'),ICON_SIZE_SMALL).'</a>';
|
|
$params['right_actions'] .= Display::div('', array('id' => 'document_result_'.$course_info['real_id'].'_0', 'class'=>'document_preview_container'));
|
|
} else {
|
|
$params['right_actions'].= '<a href="'.api_get_path(WEB_CODE_PATH).'course_info/infocours.php?cidReq='.$course['code'].'">'.Display::return_icon('edit.png', get_lang('Edit'), array('align' => 'absmiddle'),ICON_SIZE_SMALL).'</a>';
|
|
}
|
|
|
|
if ($course_info['status'] == COURSEMANAGER) {
|
|
//echo Display::return_icon('teachers.gif', get_lang('Status').': '.get_lang('Teacher'), array('style'=>'width: 11px; height: 11px;'));
|
|
}
|
|
} else {
|
|
if ($course_info['visibility'] != COURSE_VISIBILITY_CLOSED) {
|
|
if ($load_dirs) {
|
|
$params['right_actions'] .= '<a id="document_preview_'.$course_info['real_id'].'_0" class="document_preview" href="javascript:void(0);">'.Display::return_icon('folder.png', get_lang('Documents'), array('align' => 'absmiddle'),ICON_SIZE_SMALL).'</a>';
|
|
$params['right_actions'] .= Display::div('', array('id' => 'document_result_'.$course_info['real_id'].'_0', 'class'=>'document_preview_container'));
|
|
} else {
|
|
if ($course_info['status'] == COURSEMANAGER) {
|
|
$params['right_actions'].= '<a href="'.api_get_path(WEB_CODE_PATH).'course_info/infocours.php?cidReq='.$course['code'].'">'.Display::return_icon('edit.png', get_lang('Edit'), array('align' => 'absmiddle'),ICON_SIZE_SMALL).'</a>';
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
$course_title = $course_info['title'];
|
|
|
|
$course_title_url = '';
|
|
if ($course_info['visibility'] != COURSE_VISIBILITY_CLOSED || $course['status'] == COURSEMANAGER) {
|
|
$course_title_url = api_get_path(WEB_COURSE_PATH).$course_info['path'].'/?id_session=0';
|
|
$course_title = Display::url($course_info['title'], $course_title_url);
|
|
} else {
|
|
$course_title = $course_info['title']." ".Display::tag('span',get_lang('CourseClosed'), array('class'=>'item_closed'));
|
|
}
|
|
|
|
// Start displaying the course block itself
|
|
if (api_get_setting('display_coursecode_in_courselist') == 'true') {
|
|
$course_title .= ' ('.$course_info['visual_code'].') ';
|
|
}
|
|
if (api_get_setting('display_teacher_in_courselist') == 'true') {
|
|
$teachers = CourseManager::get_teacher_list_from_course_code_to_string($course['code'], self::USER_SEPARATOR, true);
|
|
}
|
|
|
|
$params['link'] = $course_title_url;
|
|
$params['icon'] = $status_icon;
|
|
$params['title'] = $course_title;
|
|
$params['teachers'] = $teachers;
|
|
|
|
if ($course_info['visibility'] != COURSE_VISIBILITY_CLOSED) {
|
|
$params['notifications'] = $show_notification;
|
|
}
|
|
|
|
$is_subcontent = true;
|
|
if (empty($user_category_id)) {
|
|
$is_subcontent = false;
|
|
}
|
|
$html .= self::course_item_html($params, $is_subcontent);
|
|
}
|
|
return $html;
|
|
}
|
|
|
|
/**
|
|
* Retrieves the user defined course categories
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* @return array containing all the titles of the user defined courses with the id as key of the array
|
|
*/
|
|
function get_user_course_categories() {
|
|
global $_user;
|
|
$output = array();
|
|
$table_category = Database::get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
|
|
$sql = "SELECT * FROM ".$table_category." WHERE user_id='".Database::escape_string($_user['user_id'])."'";
|
|
$result = Database::query($sql);
|
|
while ($row = Database::fetch_array($result)) {
|
|
$output[$row['id']] = $row['title'];
|
|
}
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* Get the course id based on the original id and field name in the extra fields. Returns 0 if course was not found
|
|
*
|
|
* @param string Original course id
|
|
* @param string Original field name
|
|
* @return int Course id
|
|
*/
|
|
public static function get_course_id_from_original_id($original_course_id_value, $original_course_id_name) {
|
|
$t_cfv = Database::get_main_table(TABLE_MAIN_COURSE_FIELD_VALUES);
|
|
$table_field = Database::get_main_table(TABLE_MAIN_COURSE_FIELD);
|
|
$sql_course = "SELECT id FROM $table_field cf INNER JOIN $t_cfv cfv ON cfv.field_id=cf.id WHERE field_variable='$original_course_id_name' AND field_value='$original_course_id_value'";
|
|
$res = Database::query($sql_course);
|
|
$row = Database::fetch_object($res);
|
|
if($row != false) {
|
|
return $row->id;
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Display code for one specific course a logged in user is subscribed to.
|
|
* Shows a link to the course, what's new icons...
|
|
*
|
|
* $my_course['d'] - course directory
|
|
* $my_course['i'] - course title
|
|
* $my_course['c'] - visual course code
|
|
* $my_course['k'] - system course code
|
|
*
|
|
* @param array Course details
|
|
* @param integer Session ID
|
|
* @param string CSS class to apply to course entry
|
|
* @param boolean Whether the session is supposedly accessible now (not in the case it has passed and is in invisible/unaccessible mode)
|
|
* @param bool Whether to show the document quick-loader or not
|
|
* @return string The HTML to be printed for the course entry
|
|
*
|
|
* @version 1.0.3
|
|
* @todo refactor into different functions for database calls | logic | display
|
|
* @todo replace single-character $my_course['d'] indices
|
|
* @todo move code for what's new icons to a separate function to clear things up
|
|
* @todo add a parameter user_id so that it is possible to show the courselist of other users (=generalisation). This will prevent having to write a new function for this.
|
|
*/
|
|
public static function get_logged_user_course_html($course, $session_id = 0, $class = 'courses', $session_accessible = true, $load_dirs = false) {
|
|
global $nosession, $nbDigestEntries, $digest, $thisCourseSysCode, $orderKey;
|
|
$user_id = api_get_user_id();
|
|
$course_info = api_get_course_info($course['code']);
|
|
$status_course = CourseManager::get_user_in_course_status($user_id, $course_info['code']);
|
|
|
|
$course_info['status'] = empty($session_id) ? $status_course : STUDENT;
|
|
|
|
$course_info['id_session'] = $session_id;
|
|
|
|
if (!$nosession) {
|
|
global $now, $date_start, $date_end;
|
|
}
|
|
|
|
// Table definitions
|
|
$main_user_table = Database :: get_main_table(TABLE_MAIN_USER);
|
|
$tbl_session = Database :: get_main_table(TABLE_MAIN_SESSION);
|
|
$tbl_session_category = Database :: get_main_table(TABLE_MAIN_SESSION_CATEGORY);
|
|
|
|
$course_access_settings = CourseManager :: get_access_settings($course_info['code']);
|
|
$course_visibility = $course_access_settings['visibility'];
|
|
|
|
$user_in_course_status = CourseManager :: get_user_in_course_status(api_get_user_id(), $course_info['code']);
|
|
|
|
$is_coach = api_is_coach($course_info['id_session'], $course['code']);
|
|
|
|
// Display course entry.
|
|
// Show a hyperlink to the course, unless the course is closed and user is not course admin.
|
|
$session_url = '';
|
|
$session_title = '';
|
|
|
|
if ($session_accessible) {
|
|
if ($course_visibility != COURSE_VISIBILITY_CLOSED || $user_in_course_status == COURSEMANAGER) {
|
|
if (!$nosession) {
|
|
if (empty($course_info['id_session'])) {
|
|
$course_info['id_session'] = 0;
|
|
}
|
|
if ($user_in_course_status == COURSEMANAGER || ($date_start <= $now && $date_end >= $now) || $date_start == '0000-00-00') {
|
|
$session_url = api_get_path(WEB_COURSE_PATH).$course_info['path'].'/?id_session='.$course_info['id_session'];
|
|
$session_title = '<a href="'.api_get_path(WEB_COURSE_PATH).$course_info['path'].'/?id_session='.$course_info['id_session'].'">'.$course_info['name'].'</a>';
|
|
}
|
|
} else {
|
|
$session_url = api_get_path(WEB_COURSE_PATH).$course_info['path'].'/';
|
|
$session_title = '<a href="'.api_get_path(WEB_COURSE_PATH).$course_info['path'].'/">'.$course_info['name'].'</a>';
|
|
}
|
|
} else {
|
|
$session_title = $course_info['name'].' '.Display::tag('span',get_lang('CourseClosed'), array('class'=>'item_closed'));
|
|
}
|
|
} else {
|
|
$session_title = $course_info['name'];
|
|
}
|
|
|
|
$params = array();
|
|
$params['icon'] = Display::return_icon('blackboard_blue.png', $course_info['name'], array(), ICON_SIZE_LARGE);
|
|
$params['link'] = $session_url;
|
|
$params['title'] = $session_title;
|
|
|
|
$params['right_actions'] = '';
|
|
|
|
if ($course_visibility != COURSE_VISIBILITY_CLOSED) {
|
|
if ($load_dirs) {
|
|
$params['right_actions'] .= '<a id="document_preview_'.$course_info['real_id'].'_'.$course_info['id_session'].'" class="document_preview" href="javascript:void(0);">'.Display::return_icon('folder.png', get_lang('Documents'), array('align' => 'absmiddle'),ICON_SIZE_SMALL).'</a>';
|
|
$params['right_actions'] .= Display::div('', array('id' => 'document_result_'.$course_info['real_id'].'_'.$course_info['id_session'], 'class'=>'document_preview_container'));
|
|
}
|
|
}
|
|
|
|
if (api_get_setting('display_coursecode_in_courselist') == 'true') {
|
|
$session_title .= ' ('.$course_info['visual_code'].') ';
|
|
}
|
|
|
|
if (api_get_setting('display_teacher_in_courselist') == 'true') {
|
|
if (!$nosession) {
|
|
$teacher_list = CourseManager::get_teacher_list_from_course_code_to_string($course_info['code'], self::USER_SEPARATOR, true);
|
|
$course_coachs = CourseManager::get_coachs_from_course_to_string($course_info['id_session'], $course['code'], self::USER_SEPARATOR, true);
|
|
|
|
if ($course_info['status'] == COURSEMANAGER || ($course_info['status'] == STUDENT && empty($course_info['id_session'])) || empty($course_info['status'])) {
|
|
$params['teachers'] = $teacher_list;
|
|
}
|
|
if (($course_info['status'] == STUDENT && !empty($course_info['id_session'])) || ($is_coach && $course_info['status'] != COURSEMANAGER)) {
|
|
$params['coaches'] = $course_coachs;
|
|
}
|
|
} else {
|
|
$params['teachers'] = $teacher_list;
|
|
}
|
|
}
|
|
|
|
$session_title .= isset($course['special_course']) ? ' '.Display::return_icon('klipper.png', get_lang('CourseAutoRegister')) : '';
|
|
|
|
// Display the "what's new" icons
|
|
if ($course_visibility != COURSE_VISIBILITY_CLOSED) {
|
|
$session_title .= Display :: show_notification($course_info);
|
|
}
|
|
|
|
$params['title'] = $session_title;
|
|
$params['extra'] = '';
|
|
|
|
$html = self::course_item_html($params, true);
|
|
|
|
$session_category_id = null;
|
|
if (!$nosession) {
|
|
$session = '';
|
|
$active = false;
|
|
if (!empty($course_info['session_name'])) {
|
|
|
|
// Request for the name of the general coach
|
|
$sql = 'SELECT lastname, firstname,sc.name
|
|
FROM '.$tbl_session.' ts
|
|
LEFT JOIN '.$main_user_table .' tu
|
|
ON ts.id_coach = tu.user_id
|
|
INNER JOIN '.$tbl_session_category.' sc ON ts.session_category_id = sc.id
|
|
WHERE ts.id='.(int) $course_info['id_session']. ' LIMIT 1';
|
|
|
|
$rs = Database::query($sql);
|
|
$sessioncoach = Database::store_result($rs);
|
|
$sessioncoach = $sessioncoach[0];
|
|
|
|
$session = array();
|
|
$session['title'] = $course_info['session_name'];
|
|
$session_category_id = CourseManager::get_session_category_id_by_session_id($course_info['id_session']);
|
|
$session['category'] = $sessioncoach['name'];
|
|
if ($course_info['date_start'] == '0000-00-00') {
|
|
//$session['dates'] = get_lang('WithoutTimeLimits');
|
|
$session['dates'] = '';
|
|
if (api_get_setting('show_session_coach') === 'true') {
|
|
$session['coach'] = get_lang('GeneralCoach').': '.api_get_person_name($sessioncoach['firstname'], $sessioncoach['lastname']);
|
|
}
|
|
$active = true;
|
|
} else {
|
|
$session ['dates'] = ' - '.get_lang('From').' '.$course_info['date_start'].' '.get_lang('To').' '.$course_info['date_end'];
|
|
if (api_get_setting('show_session_coach') === 'true') {
|
|
$session['coach'] = get_lang('GeneralCoach').': '.api_get_person_name($sessioncoach['firstname'], $sessioncoach['lastname']);
|
|
}
|
|
$active = ($date_start <= $now && $date_end >= $now);
|
|
}
|
|
}
|
|
$user_course_category = '';
|
|
if (isset($course_info['user_course_cat'])) {
|
|
$user_course_category = $course_info['user_course_cat'];
|
|
}
|
|
$output = array ($user_course_category, $html, $course_info['id_session'], $session, 'active' => $active, 'session_category_id' => $session_category_id);
|
|
} else {
|
|
$output = array ($course_info['user_course_cat'], $html);
|
|
}
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param string source course code
|
|
* @param int source session id
|
|
* @param string destination course code
|
|
* @param int destination session id
|
|
* @return bool
|
|
*/
|
|
public static function copy_course($source_course_code, $source_session_id, $destination_course_code, $destination_session_id, $params = array()) {
|
|
require_once api_get_path(SYS_CODE_PATH).'coursecopy/classes/CourseBuilder.class.php';
|
|
require_once api_get_path(SYS_CODE_PATH).'coursecopy/classes/CourseRestorer.class.php';
|
|
require_once api_get_path(SYS_CODE_PATH).'coursecopy/classes/CourseSelectForm.class.php';
|
|
|
|
$course_info = api_get_course_info($source_course_code);
|
|
|
|
if (!empty($course_info)) {
|
|
$cb = new CourseBuilder('', $course_info);
|
|
$course = $cb->build($source_session_id, $source_course_code, true);
|
|
$course_restorer = new CourseRestorer($course);
|
|
$course_restorer->skip_content = $params;
|
|
$course_restorer->restore($destination_course_code, $destination_session_id, true, true);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
/**
|
|
* A simpler version of the copy_course, the function creates an empty course with an autogenerated course code
|
|
*
|
|
* @param string new course title
|
|
* @param string source course code
|
|
* @param int source session id
|
|
* @param int destination session id
|
|
* @param bool new copied tools (Exercises and LPs)will be set to invisible by default?
|
|
*
|
|
* @return array
|
|
*/
|
|
public static function copy_course_simple($new_title, $source_course_code, $source_session_id = 0, $destination_session_id = 0, $params = array()) {
|
|
$source_course_info = api_get_course_info($source_course_code);
|
|
if (!empty($source_course_info)) {
|
|
$new_course_code = self::generate_nice_next_course_code($source_course_code);
|
|
if ($new_course_code) {
|
|
$new_course_info = self::create_course($new_title, $new_course_code, false);
|
|
if (!empty($new_course_info['code'])) {
|
|
$result = self::copy_course($source_course_code, $source_session_id, $new_course_info['code'], $destination_session_id, $params);
|
|
if ($result) {
|
|
return $new_course_info;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Creates a new course code based in a given code
|
|
*
|
|
* @param string wanted code
|
|
* <code> $wanted_code = 'curse' if there are in the DB codes like curse1 curse2 the function will return: course3</code>
|
|
* if the course code doest not exist in the DB the same course code will be returned
|
|
* @return string wanted unused code
|
|
*/
|
|
public static function generate_nice_next_course_code($wanted_code) {
|
|
require_once api_get_path(LIBRARY_PATH).'add_course.lib.inc.php';
|
|
$course_code_ok = !self::course_code_exists($wanted_code);
|
|
if (!$course_code_ok) {
|
|
$wanted_code = generate_course_code($wanted_code);
|
|
$table = Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$wanted_code = Database::escape_string($wanted_code);
|
|
$sql = "SELECT count(*) as count FROM $table WHERE code LIKE '$wanted_code%'";
|
|
$result = Database::query($sql);
|
|
if (Database::num_rows($result) > 0 ) {
|
|
$row = Database::fetch_array($result);
|
|
$count = $row['count'] + 1;
|
|
$wanted_code = $wanted_code.'_'.$count;
|
|
$result = api_get_course_info($wanted_code);
|
|
if (empty($result)) {
|
|
return $wanted_code;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
return $wanted_code;
|
|
}
|
|
|
|
|
|
/**
|
|
* Gets the status of the users agreement in a course course-session
|
|
*
|
|
* @param int user id
|
|
* @param string course code
|
|
* @param int session id
|
|
* @return boolean
|
|
*/
|
|
public static function is_user_accepted_legal($user_id, $course_code, $session_id = null) {
|
|
$user_id = intval($user_id);
|
|
$course_code = Database::escape_string($course_code);
|
|
$session_id = intval($session_id);
|
|
if (empty($session_id)) {
|
|
$table = Database::get_main_table(TABLE_MAIN_COURSE_USER);
|
|
$sql = "SELECT legal_agreement FROM $table
|
|
WHERE user_id = $user_id AND course_code ='$course_code' ";
|
|
$result = Database::query($sql);
|
|
if (Database::num_rows($result) > 0 ) {
|
|
$result = Database::fetch_array($result);
|
|
if ($result['legal_agreement'] == 1 ) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
} else {
|
|
$table = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
|
|
$sql = "SELECT legal_agreement FROM $table
|
|
WHERE id_user = $user_id AND course_code ='$course_code' AND id_session = $session_id";
|
|
$result = Database::query($sql);
|
|
if (Database::num_rows($result) > 0 ) {
|
|
$result = Database::fetch_array($result);
|
|
if ($result['legal_agreement'] == 1 ) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Saves the user-course legal agreement
|
|
* @param int user id
|
|
* @param string course code
|
|
* @param int session id
|
|
*/
|
|
function save_user_legal($user_id, $course_code, $session_id = null) {
|
|
|
|
$user_id = intval($user_id);
|
|
$course_code = Database::escape_string($course_code);
|
|
$session_id = intval($session_id);
|
|
if (empty($session_id)) {
|
|
$table = Database::get_main_table(TABLE_MAIN_COURSE_USER);
|
|
$sql = "UPDATE $table SET legal_agreement = '1'
|
|
WHERE user_id = $user_id AND course_code ='$course_code' ";
|
|
$result = Database::query($sql);
|
|
} else {
|
|
$table = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
|
|
$sql = "UPDATE $table SET legal_agreement = '1'
|
|
WHERE id_user = $user_id AND course_code = '$course_code' AND id_session = $session_id";
|
|
$result = Database::query($sql);
|
|
}
|
|
}
|
|
|
|
public static function get_user_course_vote($user_id, $course_id, $session_id = null, $url_id = null) {
|
|
$table_user_course_vote = Database::get_main_table(TABLE_MAIN_USER_REL_COURSE_VOTE);
|
|
|
|
$session_id = !isset($session_id) ? api_get_session_id() : intval($session_id);
|
|
$url_id = empty($url_id) ? api_get_current_access_url_id() : intval($url_id);
|
|
|
|
$user_id = intval($user_id);
|
|
|
|
if (empty($user_id)) {
|
|
return false;
|
|
}
|
|
|
|
$params = array(
|
|
'user_id' => $user_id,
|
|
'c_id' => $course_id,
|
|
'session_id' => $session_id,
|
|
'url_id' => $url_id
|
|
);
|
|
|
|
$result = Database::select('vote', $table_user_course_vote, array('where' => array('user_id = ? AND c_id = ? AND session_id = ? AND url_id = ?' => $params)), 'first');
|
|
if (!empty($result)) {
|
|
return $result['vote'];
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public static function get_course_ranking($course_id, $session_id = null, $url_id = null) {
|
|
$table_course_ranking = Database::get_main_table(TABLE_STATISTIC_TRACK_COURSE_RANKING);
|
|
|
|
$session_id = !isset($session_id) ? api_get_session_id() : intval($session_id);
|
|
$url_id = empty($url_id) ? api_get_current_access_url_id() : intval($url_id);
|
|
|
|
$params = array(
|
|
'c_id' => $course_id,
|
|
'session_id' => $session_id,
|
|
'url_id' => $url_id,
|
|
'creation_date' => $now,
|
|
);
|
|
|
|
$result = Database::select('c_id, accesses, total_score, users', $table_course_ranking, array('where' => array('c_id = ? AND session_id = ? AND url_id = ?' => $params)), 'first');
|
|
|
|
$point_average_in_percentage = 0;
|
|
$point_average_in_star = 0;
|
|
$users_who_voted = 0;
|
|
|
|
if (!empty($result['users'])) {
|
|
$users_who_voted = $result['users'];
|
|
$point_average_in_percentage = round($result['total_score']/$result['users'] * 100 / 5, 2);
|
|
$point_average_in_star = round($result['total_score']/$result['users'], 1);
|
|
}
|
|
|
|
$result['user_vote'] = false;
|
|
|
|
if (!api_is_anonymous()) {
|
|
$result['user_vote'] = self::get_user_course_vote(api_get_user_id(), $course_id, $session_id,$url_id);
|
|
}
|
|
|
|
$result['point_average'] = $point_average_in_percentage;
|
|
$result['point_average_star'] = $point_average_in_star;
|
|
$result['users_who_voted'] = $users_who_voted;
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
*
|
|
* Updates the course ranking
|
|
* @param int course id
|
|
* @param int session id
|
|
* @param id url id
|
|
*
|
|
**/
|
|
public static function update_course_ranking($course_id = null, $session_id = null, $url_id = null, $points_to_add = null, $add_access = true, $add_user = true) {
|
|
//Course catalog stats modifications see #4191
|
|
$table_course_ranking = Database::get_main_table(TABLE_STATISTIC_TRACK_COURSE_RANKING);
|
|
|
|
$now = api_get_utc_datetime();
|
|
|
|
$course_id = empty($course_id) ? api_get_course_int_id() : intval($course_id);
|
|
$session_id = !isset($session_id) ? api_get_session_id() : intval($session_id);
|
|
$url_id = empty($url_id) ? api_get_current_access_url_id() : intval($url_id);
|
|
|
|
$params = array(
|
|
'c_id' => $course_id,
|
|
'session_id' => $session_id,
|
|
'url_id' => $url_id,
|
|
'creation_date' => $now,
|
|
);
|
|
|
|
$result = Database::select('id, accesses, total_score, users', $table_course_ranking, array('where' => array('c_id = ? AND session_id = ? AND url_id = ?' => $params)), 'first');
|
|
|
|
// Problem here every thime we load the courses/XXXX/index.php course home page we update the access
|
|
|
|
if (empty($result)) {
|
|
if ($add_access) {
|
|
$params['accesses'] = 1;
|
|
}
|
|
//The votes and users are empty
|
|
if (isset($points_to_add) && !empty($points_to_add)) {
|
|
$params['total_score'] = intval($points_to_add);
|
|
}
|
|
if ($add_user) {
|
|
$params['users'] = 1;
|
|
}
|
|
$result = Database::insert($table_course_ranking, $params);
|
|
} else {
|
|
$my_params = array();
|
|
|
|
if ($add_access) {
|
|
$my_params['accesses'] = intval($result['accesses']) + 1;
|
|
}
|
|
if (isset($points_to_add) && !empty($points_to_add)) {
|
|
$my_params['total_score'] = $result['total_score'] + $points_to_add;
|
|
}
|
|
if ($add_user) {
|
|
$my_params['users'] = $result['users'] + 1;
|
|
}
|
|
|
|
if (!empty($my_params)) {
|
|
$result = Database::update($table_course_ranking, $my_params, array('c_id = ? AND session_id = ? AND url_id = ?' => $params));
|
|
}
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
|
|
/**
|
|
* Add user vote to a course
|
|
*
|
|
* @param int user id
|
|
* @param int vote [1..5]
|
|
* @param int course id
|
|
* @param int session id
|
|
* @param int url id (access_url_id)
|
|
* @return mixed 'added', 'updated' or 'nothing'
|
|
*
|
|
*/
|
|
|
|
public static function add_course_vote($user_id, $vote, $course_id, $session_id = null, $url_id = null) {
|
|
$table_user_course_vote = Database::get_main_table(TABLE_MAIN_USER_REL_COURSE_VOTE);
|
|
$course_id = empty($course_id) ? api_get_course_int_id() : intval($course_id);
|
|
|
|
if (empty($course_id) || empty($user_id)) {
|
|
return false;
|
|
}
|
|
|
|
if (!in_array($vote, array(1,2,3,4,5))) {
|
|
return false;
|
|
}
|
|
|
|
$session_id = !isset($session_id) ? api_get_session_id() : intval($session_id);
|
|
$url_id = empty($url_id) ? api_get_current_access_url_id() : intval($url_id);
|
|
$vote = intval($vote);
|
|
|
|
$params = array(
|
|
'user_id' => intval($user_id),
|
|
'c_id' => $course_id,
|
|
'session_id' => $session_id,
|
|
'url_id' => $url_id,
|
|
'vote' => $vote
|
|
);
|
|
|
|
$action_done = 'nothing';
|
|
|
|
$result = Database::select('id, vote', $table_user_course_vote, array('where' => array('user_id = ? AND c_id = ? AND session_id = ? AND url_id = ?' => $params)), 'first');
|
|
|
|
if (empty($result)) {
|
|
$result = Database::insert($table_user_course_vote, $params);
|
|
$points_to_add = $vote;
|
|
$add_user = true;
|
|
$action_done = 'added';
|
|
} else {
|
|
$my_params = array('vote' => $vote);
|
|
$points_to_add = $vote - $result['vote'];
|
|
$add_user = false;
|
|
|
|
$result = Database::update($table_user_course_vote, $my_params, array('user_id = ? AND c_id = ? AND session_id = ? AND url_id = ?' => $params));
|
|
$action_done = 'updated';
|
|
}
|
|
|
|
//Current points
|
|
if (!empty($points_to_add)) {
|
|
self::update_course_ranking($course_id, $session_id, $url_id, $points_to_add, false, $add_user);
|
|
}
|
|
return $action_done;
|
|
}
|
|
|
|
/**
|
|
* Remove course ranking + user votes
|
|
*
|
|
* @param int course id
|
|
* @param int session id
|
|
* @param int url id
|
|
*
|
|
*/
|
|
public function remove_course_ranking($course_id, $session_id, $url_id = null) {
|
|
$table_course_ranking = Database::get_main_table(TABLE_STATISTIC_TRACK_COURSE_RANKING);
|
|
$table_user_course_vote = Database::get_main_table(TABLE_MAIN_USER_REL_COURSE_VOTE);
|
|
if (!empty($course_id) && isset($session_id)) {
|
|
|
|
$url_id = empty($url_id) ? api_get_current_access_url_id() : intval($url_id);
|
|
$params = array(
|
|
'c_id' => $course_id,
|
|
'session_id' => $session_id,
|
|
'url_id' => $url_id,
|
|
);
|
|
Database::delete($table_course_ranking, array('c_id = ? AND session_id = ? AND url_id = ?' => $params));
|
|
Database::delete($table_user_course_vote, array('c_id = ? AND session_id = ? AND url_id = ?' => $params));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns an array with the hottest courses
|
|
* @param int number of days
|
|
* @param int number of hottest courses
|
|
*/
|
|
public static function return_hot_courses($days = 30, $limit = 5) {
|
|
global $_configuration;
|
|
$limit = intval($limit);
|
|
|
|
//Getting my courses
|
|
$my_course_list = CourseManager::get_courses_list_by_user_id(api_get_user_id());
|
|
|
|
$my_course_code_list = array();
|
|
foreach ($my_course_list as $course) {
|
|
$my_course_code_list[$course['real_id']] = $course['real_id'];
|
|
}
|
|
|
|
if (api_is_drh()) {
|
|
$courses = CourseManager::get_courses_followed_by_drh(api_get_user_id());
|
|
foreach ($courses as $course) {
|
|
$my_course_code_list[$course['real_id']] = $course['real_id'];
|
|
}
|
|
}
|
|
|
|
$table_course_access = Database::get_main_table(TABLE_STATISTIC_TRACK_E_COURSE_ACCESS);
|
|
$table_course = Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$table_course_url = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
|
|
|
|
//@todo all dates in the tracking_course_access, last_access are in the DB time (NOW) not UTC
|
|
/*
|
|
$today = api_get_utc_datetime();
|
|
$today_diff = time() -intval($days)*24*60*60;
|
|
$today_diff = api_get_utc_datetime($today_diff);
|
|
* */
|
|
|
|
//WHERE login_course_date <= '$today' AND login_course_date >= '$today_diff'
|
|
|
|
//$table_course_access table uses the now() and interval ...
|
|
|
|
$sql = "SELECT COUNT(course_access_id) course_count, a.course_code, visibility ".
|
|
"FROM $table_course c INNER JOIN $table_course_access a ".
|
|
" ON (c.code = a.course_code) INNER JOIN $table_course_url u ON u.course_code = a.course_code ".
|
|
" WHERE u.access_url_id = ".$_configuration['access_url']." AND".
|
|
" login_course_date <= now() AND ".
|
|
" login_course_date > DATE_SUB(now(), INTERVAL $days DAY) AND".
|
|
" visibility <> '".COURSE_VISIBILITY_CLOSED."'".
|
|
" GROUP BY course_code".
|
|
" ORDER BY course_count DESC".
|
|
" LIMIT $limit";
|
|
|
|
$result = Database::query($sql);
|
|
$courses = array();
|
|
if (Database::num_rows($result)) {
|
|
$courses = Database::store_result($result, 'ASSOC');
|
|
$courses = self::process_hot_course_item($courses, $my_course_code_list);
|
|
}
|
|
return $courses;
|
|
}
|
|
|
|
public static function process_hot_course_item($courses, $my_course_code_list = array()) {
|
|
$ajax_url = api_get_path(WEB_AJAX_PATH).'course.ajax.php?a=add_course_vote';
|
|
|
|
foreach ($courses as &$my_course) {
|
|
$course_info = api_get_course_info($my_course['course_code']);
|
|
$my_course['extra_info'] = $course_info;
|
|
$my_course['extra_info']['go_to_course_button'] = '';
|
|
$access_link = self::get_access_link_by_user(api_get_user_id(), $course_info, $my_course_code_list);
|
|
|
|
//Course visibility
|
|
if (0 === strcmp($access_link,'register')) {
|
|
$stok = Security::get_token();
|
|
$my_course['extra_info']['go_to_course_button'] = Display::url(get_lang('Subscribe'), api_get_path(WEB_COURSE_PATH).$course_info['path'].'/index.php?action=subscribe&sec_token='.$stok, array('class' => 'btn btn-primary'));
|
|
} elseif (0 === strcmp($access_link,'enter')) {
|
|
$my_course['extra_info']['go_to_course_button'] = Display::url(get_lang('GoToCourse'), api_get_path(WEB_COURSE_PATH).$course_info['path'].'/index.php', array('class' => 'btn btn-primary'));
|
|
}
|
|
|
|
//Description
|
|
$my_course['extra_info']['description_button'] = '';
|
|
if ($course_info['visibility'] == COURSE_VISIBILITY_OPEN_WORLD || in_array($course_info['real_id'], $my_course_code_list) ) {
|
|
$my_course['extra_info']['description_button'] = Display::url(get_lang('Description'), api_get_path(WEB_AJAX_PATH).'course_home.ajax.php?a=show_course_information&code='.$course_info['code'], array('class' => 'ajax btn'));
|
|
}
|
|
|
|
$my_course['extra_info']['teachers'] = CourseManager::get_teacher_list_from_course_code_to_string($course_info['code']);
|
|
$point_info = self::get_course_ranking($course_info['real_id'], 0);
|
|
$my_course['extra_info']['rating_html'] = Display::return_rating_system('star_'.$course_info['real_id'], $ajax_url.'&course_id='.$course_info['real_id'], $point_info);
|
|
}
|
|
return $courses;
|
|
}
|
|
|
|
public static function return_most_accessed_courses($limit = 5) {
|
|
$table_course_ranking = Database::get_main_table(TABLE_STATISTIC_TRACK_COURSE_RANKING);
|
|
$params['url_id'] = api_get_current_access_url_id();
|
|
|
|
$result = Database::select('c_id, accesses, total_score, users', $table_course_ranking, array('where' => array('url_id = ?' => $params), 'order' => 'accesses DESC', 'limit' => $limit), 'all', true);
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
*
|
|
*
|
|
* @return ResultSet
|
|
*/
|
|
static function list_inactive_courses($ceiling, $visibility_level = COURSE_VISIBILITY_REGISTERED) {
|
|
$ceiling = is_numeric($ceiling) ? (int) $ceiling : strtotime($ceiling);
|
|
$ceiling = date('Y-m-d H:i:s', $ceiling);
|
|
$visibility_level = $visibility_level ? $visibility_level : '0';
|
|
|
|
$table_course = Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$table_category = Database::get_main_table(TABLE_MAIN_CATEGORY);
|
|
$sql = "SELECT
|
|
c.*,
|
|
cat.name AS category
|
|
FROM
|
|
$table_course AS c
|
|
LEFT JOIN
|
|
$table_category AS cat
|
|
ON
|
|
c.category_code = cat.code
|
|
WHERE
|
|
c.visibility >= $visibility_level AND
|
|
c.last_visit<='$ceiling'
|
|
";
|
|
|
|
return ResultSet::create($sql);
|
|
}
|
|
|
|
/**
|
|
* Get courses count
|
|
* @param int Access URL ID (optional)
|
|
* @return int Number of courses
|
|
*/
|
|
public static function count_courses($access_url_id = null) {
|
|
$table_course = Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$table_course_rel_access_url = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
|
|
$sql = "SELECT count(id) FROM $table_course c";
|
|
if (!empty($access_url_id) && $access_url_id == intval($access_url_id)) {
|
|
$sql .= ", $table_course_rel_access_url u WHERE c.code = u.course_code AND u.access_url_id = $access_url_id";
|
|
}
|
|
$res = Database::query($sql);
|
|
$row = Database::fetch_row($res);
|
|
return $row[0];
|
|
}
|
|
|
|
/**
|
|
* Return a link to go to the course, validating the visibility of the
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* course and the user status
|
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* @param int User ID
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* @param array Course details array
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|
* @param array List of courses to which the user is subscribed (if not provided, will be generated)
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* @return mixed 'enter' for a link to go to the course or 'register' for a link to subscribe, or false if no access
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*/
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static function get_access_link_by_user($uid, $course, $user_courses = array()) {
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if (empty($uid) or empty($course)) { return false; }
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if (empty($user_courses)) {
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// get the array of courses to which the user is subscribed
|
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$user_courses = CourseManager::get_courses_list_by_user_id($uid);
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foreach ($user_courses as $k => $v) {
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$user_courses[$k] = $v['real_id'];
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}
|
|
}
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|
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$is_admin = api_is_platform_admin_by_id($uid);
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// Register button
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|
if (!api_is_anonymous($uid) && !$is_admin
|
|
&& ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD || $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
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|
&& $course['subscribe_allowed'] == SUBSCRIBE_ALLOWED
|
|
&& (!in_array($course['real_id'], $user_courses) || empty($user_courses))
|
|
) {
|
|
return 'register';
|
|
}
|
|
// Go To Course button (only if admin, if course public or if student already subscribed)
|
|
if ($is_admin
|
|
|| $course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD
|
|
|| (api_user_is_login($uid) && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
|
|
|| (in_array($course['real_id'], $user_courses) && $course['visibility'] != COURSE_VISIBILITY_CLOSED)
|
|
) {
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|
return 'enter';
|
|
}
|
|
// Print register button (if any)
|
|
return false;
|
|
}
|
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} //end class CourseManager
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