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2483 lines
112 KiB
2483 lines
112 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::determine_course_title_from_course_info($user_id, $course_info)
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CourseManager::create_combined_name($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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/**
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* Configuration files
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*/
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require_once api_get_path(CONFIGURATION_PATH).'add_course.conf.php';
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/**
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* Libraries (we assume main_api is also included...)
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*/
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require_once api_get_path(LIBRARY_PATH).'database.lib.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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* Constants definition
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*/
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//LOGIC: course visibility and registration settings
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/*
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COURSE VISIBILITY
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MAPPING OLD SETTINGS TO NEW SETTINGS
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-----------------------
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NOT_VISIBLE_NO_SUBSCRIPTION_ALLOWED
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--> COURSE_VISIBILITY_REGISTERED, SUBSCRIBE_NOT_ALLOWED
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NOT_VISIBLE_SUBSCRIPTION_ALLOWED
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--> COURSE_VISIBILITY_REGISTERED, SUBSCRIBE_ALLOWED
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VISIBLE_SUBSCRIPTION_ALLOWED
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--> COURSE_VISIBILITY_OPEN_PLATFORM, SUBSCRIBE_ALLOWED
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VISIBLE_NO_SUBSCRIPTION_ALLOWED
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--> COURSE_VISIBILITY_OPEN_PLATFORM, SUBSCRIBE_NOT_ALLOWED
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*/
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//OLD SETTINGS
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define('NOT_VISIBLE_NO_SUBSCRIPTION_ALLOWED', 0);
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define('NOT_VISIBLE_SUBSCRIPTION_ALLOWED', 1);
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define('VISIBLE_SUBSCRIPTION_ALLOWED', 2);
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define('VISIBLE_NO_SUBSCRIPTION_ALLOWED', 3);
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/**
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* Variables
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*/
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$TABLECOURSE = Database::get_main_table(TABLE_MAIN_COURSE);
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$TABLECOURSDOMAIN = Database::get_main_table(TABLE_MAIN_CATEGORY);
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$TABLEUSER = Database::get_main_table(TABLE_MAIN_USER);
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$TABLECOURSUSER = Database::get_main_table(TABLE_MAIN_COURSE_USER);
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$TABLEANNOUNCEMENTS = 'announcement';
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$coursesRepositories = $_configuration['root_sys'];
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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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/**
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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 * FROM ".Database::get_main_table(TABLE_MAIN_COURSE)."
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WHERE code='".Database::escape_string($course_code)."'"),'ASSOC'
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);
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}
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/**
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* Returns a list of courses. Should work with quickform syntax
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* @param integer Offset (from the 7th = '6'). Optional.
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* @param integer Number of results we want. Optional.
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* @param string The column we want to order it by. Optional, defaults to first column.
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* @param string The direction of the order (ASC or DESC). Optional, defaults to ASC.
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* @param string The visibility of the course, or all by default.
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* @param string If defined, only return results for which the course *title* begins with this string
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*/
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public static function get_courses_list($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 LIKE title '".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 * 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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/**
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* Unsubscribe one or more users from a course
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* @param int|array $user_id
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* @param string $course_code
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*/
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public static function unsubscribe_user($user_id, $course_code) {
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if (!is_array($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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//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_ids = implode(',', $new_user_id_list);
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} else {
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$user_ids = intval($user_id);
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}
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$course_code = Database::escape_string($course_code);
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$course = Database::fetch_object(Database::query("SELECT db_name FROM ".Database::get_main_table(TABLE_MAIN_COURSE)."
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WHERE code = '".$course_code."'"));
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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, $course->db_name)."
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WHERE user_id IN (".$user_ids.")");
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Database::query("DELETE FROM ".Database::get_course_table(TABLE_GROUP_TUTOR, $course->db_name)."
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WHERE user_id IN (".$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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$table_course_user_publication = Database :: get_course_table(TABLE_STUDENT_PUBLICATION, $course->db_name);
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$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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$sql = "DELETE FROM $table_course_user_publication WHERE author = '".Database::escape_string($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, $course->db_name)."
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WHERE user_id IN (".$user_ids.")");
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Database::query("DELETE FROM ".Database::get_course_table(TABLE_BLOGS_TASKS_REL_USER, $course->db_name)."
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WHERE user_id IN (".$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, $course->db_name)." WHERE user_id IN (".$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, $course->db_name)." WHERE user_id IN (".$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_session'])) { // We suppose the session is safe!
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// Delete in table session_rel_course_rel_user
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$my_session_id = intval ($_SESSION['id_session']);
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Database::query("DELETE FROM ".Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER)."
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WHERE id_session ='".$my_session_id."'
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AND course_code = '".Database::escape_string($_SESSION['_course']['id'])."'
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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='$my_session_id' AND id_user='$uid'";
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$rs = Database::query($sql);
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if (Database::num_rows($rs) == 0) {
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// Delete in table session_rel_user
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Database::query("DELETE FROM ".Database::get_main_table(TABLE_MAIN_SESSION_USER)."
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WHERE id_session ='".$my_session_id."'
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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 = '".$my_session_id."' AND relation_type<>".SESSION_RELATION_TYPE_RRHH." "));
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$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 = '$count'
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WHERE id = '".$my_session_id."'");
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// Update the table session_rel_course
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$row = Database::fetch_array(@Database::query("SELECT COUNT(*) FROM ".Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER)." WHERE id_session = '$my_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 = '$count' WHERE id_session = '$my_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 = '".$course_code."'");
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// add event to system log
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$time = time();
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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, $time, $user_id);
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}
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}
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/**
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* Subscribe a user to a course. No checks are performed here to see if
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* course subscription is allowed.
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* @param int User ID
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* @param string Course code
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* @param int Status (STUDENT, COURSEMANAGER, COURSE_ADMIN, NORMAL_COURSE_MEMBER)
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* @return bool True on success, false on failure
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* @see add_user_to_course
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*/
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public static function subscribe_user($user_id, $course_code, $status = STUDENT) {
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if ($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 ($course_code)) {
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return false;
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}
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$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($_SESSION['id_session'])) {
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if (Database::num_rows(@Database::query("SELECT * FROM ".Database::get_main_table(TABLE_MAIN_COURSE_USER)."
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WHERE user_id = '$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_session'])) {
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// Check whether the user has not already been stored in the session_rel_course_user table
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if (Database::num_rows(@Database::query("SELECT * FROM ".Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER)."
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WHERE course_code = '".$_SESSION['_course']['id']."'
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AND id_session ='".$_SESSION['id_session']."'
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AND id_user = '".$user_id."'")) > 0) {
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return false;
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}
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// check if the user is registered in the session with other course
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$sql = "SELECT id_user FROM ".Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER)." WHERE id_session='".$_SESSION['id_session']."' AND id_user='$user_id'";
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$rs = Database::query($sql);
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if (Database::num_rows($rs) == 0) {
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// Check whether the user has not already been stored in the session_rel_user table
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if (Database::num_rows(@Database::query("SELECT * FROM ".Database::get_main_table(TABLE_MAIN_SESSION_USER)."
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WHERE id_session ='".$_SESSION['id_session']."'
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AND id_user = '".$user_id."' AND relation_type<>".SESSION_RELATION_TYPE_RRHH." ")) > 0) {
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return false;
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}
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}
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// Add him/her in the table session_rel_course_rel_user
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@Database::query("INSERT INTO ".Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER)."
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SET id_session ='".$_SESSION['id_session']."',
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course_code = '".$_SESSION['_course']['id']."',
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id_user = '".$user_id."'");
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// Add him/her in the table session_rel_user
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@Database::query("INSERT INTO ".Database::get_main_table(TABLE_MAIN_SESSION_USER)."
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SET id_session ='".$_SESSION['id_session']."',
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id_user = '".$user_id."'");
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// Update the table session
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$row = Database::fetch_array(@Database::query("SELECT COUNT(*) FROM ".Database::get_main_table(TABLE_MAIN_SESSION_USER)." WHERE id_session = '".$_SESSION['id_session']."' 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 = '$count' WHERE id = '".$_SESSION['id_session']."'");
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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_session']."' AND course_code = '$course_code' AND status<>2" ));
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$count = $row[0]; // number of users by session
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$result = @Database::query("UPDATE ".Database::get_main_table(TABLE_MAIN_SESSION_COURSE)." SET nbr_users = '$count' WHERE id_session = '".$_SESSION['id_session']."' AND course_code = '$course_code' ");
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} else {
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|
|
$course_sort = self::userCourseSort($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.
|
|
$time = time();
|
|
$user_id = api_get_user_id();
|
|
event_system(LOG_SUBSCRIBE_USER_TO_COURSE, LOG_COURSE_CODE, $course_code, $time, $user_id);
|
|
}
|
|
|
|
return (bool)$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_course);
|
|
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);
|
|
$sql = "SELECT code FROM course WHERE id = '$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) {
|
|
$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) {
|
|
return false; // Thehe 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 = '$course_code'")) > 0) {
|
|
return false; // The user has been subscribed to the course.
|
|
}
|
|
|
|
// Check in advance whether subscription is allowed or not for this course.
|
|
if (Database::num_rows(Database::query("SELECT code, visibility FROM ".$course_table." WHERE code = '$course_code' AND subscribe = '".SUBSCRIBE_NOT_ALLOWED."'")) > 0) {
|
|
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 $result_array;
|
|
}
|
|
|
|
/**
|
|
* @return an array with the course info of all the courses (real and virtual) of which
|
|
* the current user is course admin
|
|
*/
|
|
public static function get_course_list_of_user_as_course_admin($user_id) {
|
|
global $_configuration;
|
|
|
|
if ($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
|
|
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 ($_configuration['multiple_access_urls']) {
|
|
$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
|
|
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)) {
|
|
$data[$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
|
|
* $return_result['code'] - the course code of the combined courses
|
|
*/
|
|
public static function determine_course_title_from_course_info($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 $real_course_code, the id of the real course which the virtual course is linked to
|
|
*/
|
|
public static function get_virtual_course_info($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 $system_code, the system code of the course
|
|
* @return true if the course is a virtual course, false otherwise
|
|
*/
|
|
public static function is_virtual_course_from_system_code($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($result['target_course_code']);
|
|
}
|
|
|
|
/**
|
|
* Returns whether the course code given is a visual code
|
|
* @param string Visual course code
|
|
* @return true if the course is a virtual course, false otherwise
|
|
*/
|
|
public static function is_virtual_course_from_visual_code($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($result['target_course_code']);
|
|
}
|
|
|
|
/**
|
|
* @return true if the real course has virtual courses that the user is subscribed to, false otherwise
|
|
*/
|
|
public static function has_virtual_courses_from_code($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 $real_course_code
|
|
*
|
|
* @param string The id of the real course which the virtual courses are linked to
|
|
* @return array List of courses details
|
|
*/
|
|
public static function get_virtual_courses_linked_to_real_course($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) {
|
|
|
|
$user_id = intval($user_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 '.$condition_course.' ')) > 0) {
|
|
return true;
|
|
}
|
|
|
|
if (Database::num_rows(Database::query('SELECT 1 FROM '.Database::get_main_table(TABLE_MAIN_SESSION).
|
|
' WHERE id='.intval($_SESSION['id_session']).' 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 $order_by the field to order the users by. Valid values are 'lastname', 'firstname', 'username', 'email', 'official_code' OR a part of a SQL statement that starts with ORDER BY ...
|
|
* @return array
|
|
*/
|
|
public static function get_user_list_from_course_code($course_code, $with_session = true, $session_id = 0, $limit = '', $order_by = '') {
|
|
global $_configuration;
|
|
// variable initialisation
|
|
$session_id = intval($session_id);
|
|
$users = array();
|
|
$course_code = Database::escape_string($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 = '';
|
|
}
|
|
}
|
|
|
|
$sql = $session_id == 0
|
|
? 'SELECT DISTINCT course_rel_user.status as status_rel, user.user_id, course_rel_user.role, course_rel_user.tutor_id, user.* '
|
|
: 'SELECT DISTINCT user.user_id, session_course_user.status as status_session, user.* ';
|
|
$sql .= ' FROM '.Database::get_main_table(TABLE_MAIN_USER).' as user ';
|
|
|
|
|
|
if (api_get_setting('use_session_mode')=='true' && $with_session) {
|
|
$sql .= ' LEFT JOIN '.Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER).' as session_course_user
|
|
ON user.user_id = session_course_user.id_user
|
|
AND session_course_user.course_code="'.$course_code.'"';
|
|
if ($session_id != 0) {
|
|
$sql .= ' AND session_course_user.id_session = '.$session_id;
|
|
}
|
|
$where[] = ' session_course_user.course_code IS NOT NULL ';
|
|
}
|
|
|
|
if ($session_id == 0) {
|
|
$sql .= ' LEFT JOIN '.Database::get_main_table(TABLE_MAIN_COURSE_USER).' as course_rel_user
|
|
ON user.user_id = course_rel_user.user_id AND course_rel_user.relation_type<>'.COURSE_RELATION_TYPE_RRHH.'
|
|
AND course_rel_user.course_code="'.$course_code.'"';
|
|
$where[] = ' course_rel_user.course_code IS NOT NULL ';
|
|
}
|
|
|
|
if ($_configuration['multiple_access_urls']) {
|
|
$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 ', $where);
|
|
|
|
if ($_configuration['multiple_access_urls']) {
|
|
$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);
|
|
|
|
while ($user = Database::fetch_array($rs)) {
|
|
//$user_info = Database::get_user_info_from_id($user['user_id']);
|
|
$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 $users;
|
|
}
|
|
|
|
/**
|
|
* Get a list of coaches of a course and a session
|
|
* @param string Course code
|
|
* @param int Session ID
|
|
* @return array List of users
|
|
*/
|
|
public static function get_coach_list_from_course_code($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.'"');
|
|
$user_info = array();
|
|
$session_id_coach = Database::result($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
|
|
$rs = Database::query("SELECT * FROM ".Database::get_main_table(TABLE_MAIN_COURSE_USER)."
|
|
WHERE course_code = '$course_code' AND status = 5");
|
|
while ($student = Database::fetch_array($rs)) {
|
|
$students[$student['user_id']] = $student;
|
|
}
|
|
}
|
|
|
|
// students subscribed to the course through a session
|
|
|
|
if (api_get_setting('use_session_mode') == 'true' && $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 directly subscribed to the course
|
|
$teachers = array();
|
|
// TODO: This query is not optimal.
|
|
$rs = Database::query("SELECT u.user_id, u.lastname, u.firstname, u.email, u.username, u.status " .
|
|
"FROM ".Database::get_main_table(TABLE_MAIN_COURSE_USER)." cu, ".Database::get_main_table(TABLE_MAIN_USER)." u ".
|
|
"WHERE cu.course_code = '$course_code' " .
|
|
"AND cu.status = 1 " .
|
|
"AND cu.user_id = u.user_id");
|
|
while ($teacher = Database::fetch_array($rs)) {
|
|
$teachers[$teacher['user_id']] = $teacher;
|
|
}
|
|
return $teachers;
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
|
|
//get users from real course
|
|
$user_list = self::get_user_list_from_course_code($course_code, $with_sessions, $session_id);
|
|
foreach ($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, $with_sessions, $session_id);
|
|
foreach ($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, $real_course_code) {
|
|
$result_array = array();
|
|
|
|
if ($user_id != strval(intval($user_id))) {
|
|
return $result_array;
|
|
}
|
|
|
|
$course_code = Database::escape_string($course_code);
|
|
|
|
$sql_result = Database::query("SELECT *
|
|
FROM ".Database::get_main_table(TABLE_MAIN_COURSE)." course
|
|
LEFT JOIN ".Database::get_main_table(TABLE_MAIN_COURSE_USER)." course_user
|
|
ON course.code = course_user.course_code
|
|
WHERE course.target_course_code = '$real_course_code' AND course_user.user_id = '$user_id' AND course_user.relation_type<>".COURSE_RELATION_TYPE_RRHH." ");
|
|
|
|
while ($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);
|
|
$database_name = $course_info['db_name'];
|
|
|
|
$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, $database_name)." AS g
|
|
LEFT JOIN ".Database::get_course_table(TABLE_GROUP_USER, $database_name)." gu
|
|
ON g.id = gu.group_id
|
|
$session_condition
|
|
GROUP BY g.id
|
|
ORDER BY g.name";
|
|
|
|
//var_dump($sql);
|
|
//exit();
|
|
$result = Database::query($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);
|
|
$user_role_table = Database::get_main_table(MAIN_USER_ROLE_TABLE);
|
|
$location_table = Database::get_main_table(MAIN_LOCATION_TABLE);
|
|
$role_right_location_table = Database::get_main_table(MAIN_ROLE_RIGHT_LOCATION_TABLE);
|
|
$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);
|
|
$stats = false;
|
|
if (Database::get_statistic_database() != ''){
|
|
$stats = true;
|
|
$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);
|
|
$db_name = $this_course['db_name'];
|
|
self::create_database_dump($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($sql);
|
|
|
|
// Delete the course from the stats tables
|
|
if ($stats) {
|
|
$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);
|
|
if (!$_configuration['single_database']) {
|
|
$sql = "DROP DATABASE IF EXISTS ".$course['db_name'];
|
|
Database::query($sql);
|
|
} else {
|
|
//TODO Clean the following code as currently it would probably delete another course
|
|
//similarly named, by mistake...
|
|
$db_pattern = $_configuration['table_prefix'].$course['db_name'].$_configuration['db_glue'];
|
|
$sql = "SHOW TABLES LIKE '$db_pattern%'";
|
|
$result = Database::query($sql);
|
|
while (list ($courseTable) = Database::fetch_array($result)) {
|
|
Database::query("DROP TABLE $courseTable");
|
|
}
|
|
}
|
|
$course_dir = api_get_path(SYS_COURSE_PATH).$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
|
|
if ($stats) {
|
|
$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
|
|
$time = time();
|
|
$user_id = api_get_user_id();
|
|
event_system(LOG_COURSE_DELETE, LOG_COURSE_CODE, $code, $time, $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);
|
|
$sql = "SHOW TABLES FROM ".$course['db_name'];
|
|
$res = Database::query($sql);
|
|
while ($table = Database::fetch_array($res)) {
|
|
$sql = "SELECT * FROM ".$course['db_name'].".".$table[0]."";
|
|
$res3 = Database::query($sql);
|
|
while ($row = Database::fetch_array($res3)) {
|
|
foreach ($row as $key => $value) {
|
|
$row[$key] = $key."='".addslashes($row[$key])."'";
|
|
}
|
|
$sql_dump .= "\nINSERT INTO $table[0] SET ".implode(', ', $row).';';
|
|
}
|
|
}
|
|
if (is_dir(api_get_path(SYS_COURSE_PATH).$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 = '') {
|
|
|
|
$res = Database::query("SELECT code, name, auth_course_child, auth_cat_child
|
|
FROM ".Database::get_main_table(TABLE_MAIN_CATEGORY)."
|
|
WHERE parent_id ".(is_null($parent_code) ? "IS NULL" : "='".Database::escape_string($parent_code)."'")."
|
|
ORDER BY code");
|
|
|
|
while ($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);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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_course_field = Database :: get_main_table(TABLE_MAIN_COURSE_FIELD);
|
|
$tbl_course_field_value = Database :: get_main_table(TABLE_MAIN_COURSE_FIELD_VALUES);
|
|
$tbl_user_course_category = Database :: get_user_personal_table(TABLE_USER_COURSE_CATEGORY);
|
|
|
|
// get course list auto-register
|
|
$sql = "SELECT DISTINCT(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 ";
|
|
|
|
$special_course_result = Database::query($sql);
|
|
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'].'"';
|
|
}
|
|
}
|
|
$with_special_courses = $without_special_courses = '';
|
|
if (!empty($special_course_list)) {
|
|
$with_special_courses = ' course.code IN ('.implode(',',$special_course_list).')';
|
|
$without_special_courses = ' AND course.code NOT IN ('.implode(',',$special_course_list).')';
|
|
}
|
|
|
|
if (!empty($with_special_courses)) {
|
|
$sql = "SELECT DISTINCT(course.code), course.db_name db_name, course.title
|
|
FROM ".$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['code'];
|
|
}
|
|
}
|
|
}
|
|
|
|
// 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.db_name,course.title
|
|
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[] = $row['code'];
|
|
}
|
|
}
|
|
|
|
if ($include_sessions === true) {
|
|
$r = Database::query("SELECT DISTINCT(c.code),c.db_name,c.title
|
|
FROM ".Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER)." s, ".Database::get_main_table(TABLE_MAIN_COURSE)." c
|
|
WHERE id_user = $user_id AND s.course_code=c.code");
|
|
while ($row = Database::fetch_array($r, 'ASSOC')) {
|
|
if (!in_array($row['code'], $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'], null, PERSON_NAME_EMAIL_ADDRESS);
|
|
$list[] = array($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);
|
|
$mail_tutor = array($row_emails['email'] => $name_tutor);
|
|
$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 => $value) {
|
|
if(!empty($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.gif', get_lang('Edit'), array('style' => 'vertical-align:middle;float:right; padding-right:4px;'));
|
|
$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 = '') {
|
|
$condition_session = '';
|
|
if ($session_id !== '') {
|
|
$session_id = intval($session_id);
|
|
$condition_session = " WHERE session_id = '$session_id' ";
|
|
}
|
|
$sql = "SELECT COUNT(*) AS n FROM $table $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 $affected_rows;
|
|
|
|
}
|
|
|
|
/**
|
|
* get courses followed by human resources manager
|
|
* @param int human resources manager id
|
|
* @return array courses
|
|
*/
|
|
public static function get_courses_followed_by_drh($hr_dept_id) {
|
|
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);
|
|
|
|
$hr_dept_id = intval($hr_dept_id);
|
|
$assigned_courses_to_hrm = array();
|
|
|
|
if ($_configuration['multiple_access_urls']) {
|
|
$sql = "SELECT * FROM $tbl_course c
|
|
INNER JOIN $tbl_course_rel_user cru ON (cru.course_code = c.code) LEFT JOIN $tbl_course_rel_access_url a ON (a.course_code = c.code) WHERE cru.user_id = '$hr_dept_id' AND status = ".DRH." AND relation_type = '".COURSE_RELATION_TYPE_RRHH."' AND access_url_id = ".api_get_current_access_url_id()."";
|
|
} else {
|
|
$sql = "SELECT * FROM $tbl_course c
|
|
INNER JOIN $tbl_course_rel_user cru ON cru.course_code = c.code AND cru.user_id = '$hr_dept_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));
|
|
|
|
$result = false;
|
|
$allowed_picture_types = array ('jpg', 'jpeg', 'png', 'gif');
|
|
if (in_array($extension, $allowed_picture_types)) {
|
|
if (file_exists($course_image)) {
|
|
@unlink($course_image);
|
|
}
|
|
if (file_exists($course_medium_image)) {
|
|
@unlink($course_medium_image);
|
|
}
|
|
if ($extension != 'png') {
|
|
// convert image to png extension
|
|
if ($extension == 'jpg' || $extension == 'jpeg') {
|
|
$image = imagecreatefromjpeg($source_file);
|
|
} else {
|
|
$image = imagecreatefromgif($source_file);
|
|
}
|
|
ob_start();
|
|
imagepng($image);
|
|
$imagevariable = ob_get_contents();
|
|
ob_end_clean();
|
|
// save picture
|
|
if (@file_put_contents($course_image, $imagevariable)) {
|
|
$result = true;
|
|
}
|
|
} else {
|
|
$result = @move_uploaded_file($source_file, $course_image);
|
|
}
|
|
}
|
|
|
|
// redimension image to 85x85
|
|
if ($result) {
|
|
|
|
$max_size_for_picture = 85;
|
|
|
|
if (!class_exists('image')) {
|
|
require_once api_get_path(LIBRARY_PATH).'image.lib.php';
|
|
}
|
|
|
|
$medium = new image($course_image);
|
|
|
|
$picture_infos = api_getimagesize($course_image);
|
|
if ($picture_infos[0] > $max_size_for_picture) {
|
|
$thumbwidth = $max_size_for_picture;
|
|
$new_height = $max_size_for_picture; //round(($thumbwidth / $picture_infos[0]) * $picture_infos[1]);
|
|
//if ($new_height > $max_size_for_picture) { $new_height = $thumbwidth;}
|
|
$medium->resize($thumbwidth, $new_height, 0, true);
|
|
}
|
|
|
|
$rs = $medium->send_image('PNG', $store_path.'/course-pic85x85.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);
|
|
}
|
|
|
|
} //end class CourseManager
|
|
|