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2358 lines
98 KiB
2358 lines
98 KiB
<?php
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/* For licensing terms, see /license.txt */
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/**
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*
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* @package chamilo.library
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*/
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/**
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* Code
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*/
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require_once 'fileManage.lib.php';
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require_once 'fileUpload.lib.php';
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require_once 'document.lib.php';
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/**
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* This library contains some functions for group-management.
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* @author Bart Mollet
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* @package chamilo.library
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* @todo Add $course_code parameter to all functions. So this GroupManager can
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* be used outside a session.
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*/
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class GroupManager
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{
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//- VIRTUAL_COURSE_CATEGORY: in this category groups are created based on the virtual course of a course
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const VIRTUAL_COURSE_CATEGORY = 1;
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//DEFAULT_GROUP_CATEGORY: When group categories aren't available (platform-setting), all groups are created in this 'dummy'-category
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const DEFAULT_GROUP_CATEGORY = 2;
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/**
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* infinite
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*/
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const INFINITE = 99999;
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/**
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* No limit on the number of users in a group
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*/
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const MEMBER_PER_GROUP_NO_LIMIT = 0;
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/**
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* No limit on the number of groups per user
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*/
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const GROUP_PER_MEMBER_NO_LIMIT = 0;
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/**
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* The tools of a group can have 3 states
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* - not available
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* - public
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* - private
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*/
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const TOOL_NOT_AVAILABLE = 0;
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const TOOL_PUBLIC = 1;
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const TOOL_PRIVATE = 2;
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/**
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* Constants for the available group tools
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*/
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const GROUP_TOOL_FORUM = 0;
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const GROUP_TOOL_DOCUMENTS = 1;
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const GROUP_TOOL_CALENDAR = 2;
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const GROUP_TOOL_ANNOUNCEMENT = 3;
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const GROUP_TOOL_WORK = 4;
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const GROUP_TOOL_WIKI = 5;
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const GROUP_TOOL_CHAT = 6;
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private function __construct()
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{
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}
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/**
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* @return array
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*/
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public static function get_groups()
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{
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$table_group = Database :: get_course_table(TABLE_GROUP);
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$course_id = api_get_course_int_id();
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$sql = "SELECT * FROM $table_group WHERE c_id = $course_id ";
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$result = Database::query($sql);
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return Database::store_result($result, 'ASSOC');
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}
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/**
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* Get list of groups for current course.
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* @param int $category The id of the category from which the groups are
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* requested
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* @param string $course_code Default is current course
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* @return array An array with all information about the groups.
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*/
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public static function get_group_list($category = null, $course_code = null)
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{
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$my_user_id = api_get_user_id();
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$course_info = api_get_course_info($course_code);
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$course_id = $course_info['real_id'];
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$table_group_user = Database :: get_course_table(TABLE_GROUP_USER);
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$table_group = Database :: get_course_table(TABLE_GROUP);
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//condition for the session
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$session_id = api_get_session_id();
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$my_status_of_user_in_course = CourseManager::get_user_in_course_status($my_user_id, $course_info['code']);
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$is_student_in_session = false;
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if (is_null($my_status_of_user_in_course) || $my_status_of_user_in_course=='') {
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if ($session_id>0) {
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$is_student_in_session=true;
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}
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}
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// COURSEMANAGER or STUDENT
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if ($my_status_of_user_in_course == COURSEMANAGER || api_is_allowed_to_edit(null, true) || api_is_drh()) {
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$can_see_groups = 1;
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$sql = "SELECT g.id,
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g.name,
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g.description,
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g.category_id,
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g.max_student maximum_number_of_members,
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g.secret_directory,
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g.self_registration_allowed,
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g.self_unregistration_allowed,
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g.session_id,
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ug.user_id is_member
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FROM $table_group g
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LEFT JOIN $table_group_user ug
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ON (ug.group_id = g.id AND ug.user_id = '".api_get_user_id()."' AND ug.c_id = $course_id AND g.c_id = $course_id)";
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} elseif ($my_status_of_user_in_course==STUDENT || $is_student_in_session === true || $_SESSION['studentview'] == 'studentview') {
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$can_see_groups = 1;
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$sql = "SELECT g.id,
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g.name,
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g.description,
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g.category_id,
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g.max_student maximum_number_of_members,
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g.secret_directory,
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g.self_registration_allowed,
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g.self_unregistration_allowed,
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g.session_id,
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ug.user_id is_member
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FROM $table_group g
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LEFT JOIN $table_group_user ug
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ON (ug.group_id = g.id AND ug.user_id = '".api_get_user_id()."' AND ug.c_id = $course_id AND g.c_id = $course_id)";
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}
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$sql .= " WHERE 1=1 ";
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if ($category != null) {
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$sql .= " AND g.category_id = '".Database::escape_string($category)."' ";
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$session_condition = api_get_session_condition($session_id);
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if (!empty($session_condition)) {
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$sql .= $session_condition;
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}
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} else {
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$session_condition = api_get_session_condition($session_id, true);
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}
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$sql .= " AND g.c_id = $course_id ";
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if (!empty($session_condition)) {
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$sql .= $session_condition;
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}
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$sql .= " GROUP BY g.id ORDER BY UPPER(g.name)";
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if ($can_see_groups == 1) {
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$groupList = Database::query($sql);
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} else {
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return array();
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}
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$groups = array();
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while ($thisGroup = Database::fetch_array($groupList)) {
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$thisGroup['number_of_members'] = count(self::get_subscribed_users($thisGroup['id']));
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if ($thisGroup['session_id']!=0) {
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$sql = 'SELECT name FROM '.Database::get_main_table(TABLE_MAIN_SESSION).'
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WHERE id='.$thisGroup['session_id'];
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$rs_session = Database::query($sql);
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if (Database::num_rows($rs_session)>0) {
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$thisGroup['session_name'] = Database::result($rs_session, 0, 0);
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}
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}
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$groups[] = $thisGroup;
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}
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return $groups;
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}
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/**
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* Create a group
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* @param string $name The name for this group
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* @param int $tutor The user-id of the group's tutor
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* @param int $places How many people can subscribe to the new group
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*/
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public static function create_group($name, $category_id, $tutor, $places)
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{
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global $_course;
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$table_group = Database :: get_course_table(TABLE_GROUP);
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$session_id = api_get_session_id();
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$course_id = api_get_course_int_id();
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$currentCourseRepository = $_course['path'];
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$category = self :: get_category($category_id);
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$places = intval($places);
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if ($places == 0) {
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//if the amount of users per group is not filled in, use the setting from the category
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$places = $category['max_student'];
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} else {
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if ($places > $category['max_student'] && $category['max_student'] != 0) {
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$places = $category['max_student'];
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}
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}
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$sql = "INSERT INTO ".$table_group." SET
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c_id = $course_id ,
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category_id='".Database::escape_string($category_id)."',
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max_student = '".$places."',
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doc_state = '".$category['doc_state']."',
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calendar_state = '".$category['calendar_state']."',
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work_state = '".$category['work_state']."',
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announcements_state = '".$category['announcements_state']."',
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forum_state = '".$category['forum_state']."',
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wiki_state = '".$category['wiki_state']."',
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chat_state = '".$category['chat_state']."',
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self_registration_allowed = '".$category['self_reg_allowed']."',
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self_unregistration_allowed = '".$category['self_unreg_allowed']."',
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session_id='".Database::escape_string($session_id)."'";
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Database::query($sql);
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$lastId = Database::insert_id();
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if ($lastId) {
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$desired_dir_name= '/'.replace_dangerous_char($name,'strict').'_groupdocs';
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$my_path = api_get_path(SYS_COURSE_PATH).$currentCourseRepository.'/document';
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$unique_name = create_unexisting_directory($_course, api_get_user_id(), $session_id, $lastId, NULL, $my_path, $desired_dir_name);
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/* Stores the directory path into the group table */
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$sql = "UPDATE ".$table_group." SET name = '".Database::escape_string($name)."', secret_directory = '".$unique_name."'
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WHERE c_id = $course_id AND id ='".$lastId."'";
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Database::query($sql);
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// create a forum if needed
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if ($category['forum_state'] >= 0) {
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require_once api_get_path(SYS_CODE_PATH).'forum/forumconfig.inc.php';
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require_once api_get_path(SYS_CODE_PATH).'forum/forumfunction.inc.php';
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$forum_categories = get_forum_categories();
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$values = array();
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$values['forum_title'] = $name;
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$values['group_id'] = $lastId;
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$counter = 0;
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foreach ($forum_categories as $key=>$value) {
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if ($counter==0) {
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$forum_category_id = $key;
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}
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$counter++;
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}
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// A sanity check.
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if (empty($forum_category_id)) {
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$forum_category_id = 0;
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}
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$values['forum_category'] = $forum_category_id;
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$values['allow_anonymous_group']['allow_anonymous'] = 0;
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$values['students_can_edit_group']['students_can_edit'] = 0;
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$values['approval_direct_group']['approval_direct'] = 0;
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$values['allow_attachments_group']['allow_attachments'] = 1;
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$values['allow_new_threads_group']['allow_new_threads'] = 1;
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$values['default_view_type_group']['default_view_type']=api_get_setting('default_forum_view');
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$values['group_forum'] = $lastId;
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if ($category['forum_state'] == '1') {
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$values['public_private_group_forum_group']['public_private_group_forum']='public';
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} elseif ($category['forum_state'] == '2') {
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$values['public_private_group_forum_group']['public_private_group_forum']='private';
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} elseif ($category['forum_state'] == '0') {
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$values['public_private_group_forum_group']['public_private_group_forum']='unavailable';
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}
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store_forum($values);
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}
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}
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return $lastId;
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}
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/**
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* Create subgroups.
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* This function creates new groups based on an existing group. It will
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* create the specified number of groups and fill those groups with users
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* from the base group
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* @param int $group_id The group from which subgroups have to be created.
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* @param int $number_of_groups The number of groups that have to be created
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*/
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public static function create_subgroups($group_id, $number_of_groups)
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{
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$course_id = api_get_course_int_id();
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$table_group = Database :: get_course_table(TABLE_GROUP);
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$category_id = self :: create_category('Subgroups', '', self::TOOL_PRIVATE, self::TOOL_PRIVATE, 0, 0, 1, 1);
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$users = self :: get_users($group_id);
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$group_ids = array ();
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for ($group_nr = 1; $group_nr <= $number_of_groups; $group_nr ++) {
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$group_ids[] = self :: create_group('SUBGROUP '.$group_nr, $category_id, 0, 0);
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}
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$members = array ();
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foreach ($users as $index => $user_id) {
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self :: subscribe_users($user_id, $group_ids[$index % $number_of_groups]);
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$members[$group_ids[$index % $number_of_groups]]++;
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}
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foreach ($members as $group_id => $places) {
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$sql = "UPDATE $table_group SET max_student = $places WHERE c_id = $course_id AND id = $group_id";
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Database::query($sql);
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}
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}
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/**
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* Create groups from all virtual courses in the given course.
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* @deprecated
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*/
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public static function create_groups_from_virtual_courses()
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{
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self :: delete_category(self::VIRTUAL_COURSE_CATEGORY);
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$id = self :: create_category(get_lang('GroupsFromVirtualCourses'), '', self::TOOL_NOT_AVAILABLE, self::TOOL_NOT_AVAILABLE, 0, 0, 1, 1);
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$table_group_cat = Database :: get_course_table(TABLE_GROUP_CATEGORY);
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$course_id = api_get_course_int_id();
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$sql = "UPDATE ".$table_group_cat." SET id=".self::VIRTUAL_COURSE_CATEGORY." WHERE c_id = $course_id AND id=$id";
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Database::query($sql);
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$course = api_get_course_info();
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$course['code'] = $course['sysCode'];
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$course['title'] = $course['name'];
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$virtual_courses = CourseManager :: get_virtual_courses_linked_to_real_course($course['sysCode']);
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$group_courses = $virtual_courses;
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$group_courses[] = $course;
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$ids = array ();
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foreach ($group_courses as $index => $group_course) {
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$users = CourseManager :: get_user_list_from_course_code($group_course['code']);
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$members = array ();
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foreach ($users as $index => $user) {
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if ($user['status'] == 5 && $user['tutor_id'] == 0) {
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$members[] = $user['user_id'];
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}
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}
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$id = self :: create_group($group_course['code'], self::VIRTUAL_COURSE_CATEGORY, 0, count($members));
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self :: subscribe_users($members, $id);
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$ids[] = $id;
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}
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return $ids;
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}
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/**
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* Create a group for every class subscribed to the current course
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* @param int $category_id The category in which the groups should be created
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*/
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public static function create_class_groups($category_id)
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{
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$options['where'] = array(" usergroup.course_id = ? " => api_get_real_course_id());
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$obj = new UserGroup();
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$classes = $obj->get_usergroup_in_course($options);
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$group_ids = array();
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foreach ($classes as $class) {
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$users_ids = $obj->get_users_by_usergroup($class['id']);
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$group_id = self::create_group($class['name'],$category_id,0,count($users_ids));
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self::subscribe_users($users_ids,$group_id);
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$group_ids[] = $group_id;
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}
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return $group_ids;
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}
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/**
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* deletes groups and their data.
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* @author Christophe Gesche <christophe.gesche@claroline.net>
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* @author Hugues Peeters <hugues.peeters@claroline.net>
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* @author Bart Mollet
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* @param mixed $groupIdList - group(s) to delete. It can be a single id
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* (int) or a list of id (array).
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* @param string $course_code Default is current course
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* @return integer - number of groups deleted.
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*/
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public static function delete_groups($group_ids, $course_code = null)
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{
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$course_info = api_get_course_info($course_code);
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$course_id = $course_info['real_id'];
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// Database table definitions
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$group_table = Database :: get_course_table(TABLE_GROUP);
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$forum_table = Database :: get_course_table(TABLE_FORUM);
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$group_ids = is_array($group_ids) ? $group_ids : array ($group_ids);
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$group_ids = array_map('intval',$group_ids);
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if (api_is_course_coach()) {
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//a coach can only delete courses from his session
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for ($i=0 ; $i<count($group_ids) ; $i++) {
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if (!api_is_element_in_the_session(TOOL_GROUP,$group_ids[$i])) {
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array_splice($group_ids,$i,1);
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$i--;
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}
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}
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if (count($group_ids)==0)
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return 0;
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}
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// Unsubscribe all users
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self :: unsubscribe_all_users($group_ids);
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$sql = "SELECT id, secret_directory, session_id FROM $group_table
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WHERE c_id = $course_id AND id IN (".implode(' , ', $group_ids).")";
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$db_result = Database::query($sql);
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while ($group = Database::fetch_object($db_result)) {
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// move group-documents to garbage
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$source_directory = api_get_path(SYS_COURSE_PATH).$course_info['path']."/document".$group->secret_directory;
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//File to renamed
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$destination_dir = api_get_path(SYS_COURSE_PATH).$course_info['path']."/document".$group->secret_directory.'_DELETED_'.$group->id;
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if (!empty($group->secret_directory)) {
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//Deleting from document tool
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DocumentManager::delete_document($course_info, $group->secret_directory, $source_directory);
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if (file_exists($source_directory)) {
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if (api_get_setting('permanently_remove_deleted_files') == 'true') {
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// Delete
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my_delete($source_directory);
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} else {
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// Rename
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rename($source_directory, $destination_dir);
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}
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}
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}
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}
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// delete the groups
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$sql = "DELETE FROM ".$group_table." WHERE c_id = $course_id AND id IN ('".implode("' , '", $group_ids)."')";
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Database::query($sql);
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$sql = "DELETE FROM ".$forum_table." WHERE c_id = $course_id AND forum_of_group IN ('".implode("' , '", $group_ids)."')";
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Database::query($sql);
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return Database::affected_rows();
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}
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/**
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* Get group properties
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* @param int $group_id The group from which properties are requested.
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* @return array All properties. Array-keys are name, tutor_id, description, maximum_number_of_students, directory and visibility of tools
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*/
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public static function get_group_properties($group_id)
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{
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$course_id = api_get_course_int_id();
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if (empty($group_id) or !is_integer(intval($group_id))) {
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return null;
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}
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$result = array();
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$table_group = Database :: get_course_table(TABLE_GROUP);
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$sql = "SELECT * FROM $table_group WHERE c_id = $course_id AND id = ".intval($group_id);
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$db_result = Database::query($sql);
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$db_object = Database::fetch_object($db_result);
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$result['id'] = $db_object->id;
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$result['name'] = $db_object->name;
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$result['tutor_id'] = isset($db_object->tutor_id)?$db_object->tutor_id:null;
|
|
$result['description'] = $db_object->description;
|
|
$result['maximum_number_of_students'] = $db_object->max_student;
|
|
$result['doc_state'] = $db_object->doc_state;
|
|
$result['work_state'] = $db_object->work_state;
|
|
$result['calendar_state'] = $db_object->calendar_state;
|
|
$result['announcements_state'] = $db_object->announcements_state;
|
|
$result['forum_state'] = $db_object->forum_state;
|
|
$result['wiki_state'] = $db_object->wiki_state;
|
|
$result['chat_state'] = $db_object->chat_state;
|
|
$result['directory'] = $db_object->secret_directory;
|
|
$result['self_registration_allowed'] = $db_object->self_registration_allowed;
|
|
$result['self_unregistration_allowed'] = $db_object->self_unregistration_allowed;
|
|
|
|
$result['count_users'] = count(self::get_subscribed_users($group_id));
|
|
$result['count_tutor'] = count(self::get_subscribed_tutors($group_id));
|
|
$result['count_all'] = $result['count_users'] + $result['count_tutor'];
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* @param string $name
|
|
* @param string $courseCode
|
|
* @return array
|
|
*/
|
|
public static function getGroupByName($name, $courseCode = null)
|
|
{
|
|
$name = trim($name);
|
|
|
|
if (empty($name)) {
|
|
return array();
|
|
}
|
|
|
|
$course_info = api_get_course_info($courseCode);
|
|
$course_id = $course_info['real_id'];
|
|
$name = Database::escape_string($name);
|
|
$table_group = Database::get_course_table(TABLE_GROUP);
|
|
$sql = "SELECT * FROM $table_group
|
|
WHERE c_id = $course_id AND name = '$name' LIMIT 1";
|
|
$res = Database::query($sql);
|
|
$group = array();
|
|
if (Database::num_rows($res)) {
|
|
$group = Database::fetch_array($res, 'ASSOC');
|
|
}
|
|
return $group;
|
|
}
|
|
|
|
/**
|
|
* @param int $courseId
|
|
* @param int $categoryId
|
|
* @param string $name
|
|
* @return array
|
|
*/
|
|
public static function getGroupListFilterByName($name, $categoryId, $courseId)
|
|
{
|
|
$name = trim($name);
|
|
if (empty($name)) {
|
|
return array();
|
|
}
|
|
$name = Database::escape_string($name);
|
|
$courseId = intval($courseId);
|
|
$table_group = Database::get_course_table(TABLE_GROUP);
|
|
$sql = "SELECT * FROM $table_group
|
|
WHERE c_id = $courseId AND name LIKE '%$name%'";
|
|
|
|
if (!empty($categoryId)) {
|
|
$categoryId = intval($categoryId);
|
|
$sql .= " AND category_id = $categoryId";
|
|
}
|
|
$sql .= " ORDER BY name";
|
|
$result = Database::query($sql);
|
|
return Database::store_result($result, 'ASSOC');
|
|
}
|
|
|
|
|
|
/**
|
|
* Set group properties
|
|
* Changes the group's properties.
|
|
* @param int Group Id
|
|
* @param string Group name
|
|
* @param string Group description
|
|
* @param int Max number of students in group
|
|
* @param int Document tool's visibility (0=none,1=private,2=public)
|
|
* @param int Work tool's visibility (0=none,1=private,2=public)
|
|
* @param int Calendar tool's visibility (0=none,1=private,2=public)
|
|
* @param int Announcement tool's visibility (0=none,1=private,2=public)
|
|
* @param int Forum tool's visibility (0=none,1=private,2=public)
|
|
* @param int Wiki tool's visibility (0=none,1=private,2=public)
|
|
* @param int Chat tool's visibility (0=none,1=private,2=public)
|
|
* @param bool Whether self registration is allowed or not
|
|
* @param bool Whether self unregistration is allowed or not
|
|
* @return bool TRUE if properties are successfully changed, false otherwise
|
|
*/
|
|
public static function set_group_properties(
|
|
$group_id,
|
|
$name,
|
|
$description,
|
|
$maximum_number_of_students,
|
|
$doc_state,
|
|
$work_state,
|
|
$calendar_state,
|
|
$announcements_state,
|
|
$forum_state,
|
|
$wiki_state,
|
|
$chat_state,
|
|
$self_registration_allowed,
|
|
$self_unregistration_allowed
|
|
) {
|
|
$table_group = Database :: get_course_table(TABLE_GROUP);
|
|
$table_forum = Database :: get_course_table(TABLE_FORUM);
|
|
//$forum_id = get_forums_of_group($group_id);
|
|
$group_id = Database::escape_string($group_id);
|
|
$category = self::get_category_from_group($group_id);
|
|
|
|
$course_id = api_get_course_int_id();
|
|
|
|
$sql = "UPDATE ".$table_group." SET
|
|
name='".Database::escape_string(trim($name))."',
|
|
doc_state = '".Database::escape_string($doc_state)."',
|
|
work_state = '".Database::escape_string($work_state)."',
|
|
calendar_state = '".Database::escape_string($calendar_state)."',
|
|
announcements_state = '".Database::escape_string($announcements_state)."',
|
|
forum_state = '".Database::escape_string($forum_state)."',
|
|
wiki_state = '".Database::escape_string($wiki_state)."',
|
|
chat_state = '".Database::escape_string($chat_state)."',
|
|
description='".Database::escape_string(trim($description))."',
|
|
max_student= '".Database::escape_string($maximum_number_of_students)."',
|
|
self_registration_allowed='".Database::escape_string($self_registration_allowed)."',
|
|
self_unregistration_allowed='".Database::escape_string($self_unregistration_allowed)."'
|
|
WHERE c_id = $course_id AND id=".$group_id;
|
|
$result = Database::query($sql);
|
|
//Here we are updating a field in the table forum_forum that perhaps duplicates the table group_info.forum_state cvargas
|
|
$forum_state = (int) $forum_state;
|
|
$sql2 = "UPDATE ".$table_forum." SET ";
|
|
if ($forum_state===1) {
|
|
$sql2 .= " forum_group_public_private='public' ";
|
|
} elseif ($forum_state===2) {
|
|
$sql2 .= " forum_group_public_private='private' ";
|
|
} elseif ($forum_state===0) {
|
|
$sql2 .= " forum_group_public_private='unavailable' ";
|
|
}
|
|
$sql2 .=" WHERE c_id = $course_id AND forum_of_group=".$group_id;
|
|
Database::query($sql2);
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Get the total number of groups for the current course.
|
|
* @return int The number of groups for the current course.
|
|
*/
|
|
public static function get_number_of_groups()
|
|
{
|
|
$course_id = api_get_course_int_id();
|
|
$table_group = Database :: get_course_table(TABLE_GROUP);
|
|
$res = Database::query("SELECT COUNT(id) AS number_of_groups FROM $table_group WHERE c_id = $course_id ");
|
|
$obj = Database::fetch_object($res);
|
|
return $obj->number_of_groups;
|
|
}
|
|
|
|
// GROUP CATEGORY FUNCTIONS
|
|
|
|
/**
|
|
* Get all categories
|
|
* @param string $course_code The course (default = current course)
|
|
* @return array
|
|
*/
|
|
public static function get_categories($course_code = null)
|
|
{
|
|
$course_info = api_get_course_info($course_code);
|
|
$course_id = $course_info['real_id'];
|
|
$table_group_cat = Database :: get_course_table(TABLE_GROUP_CATEGORY);
|
|
$sql = "SELECT * FROM $table_group_cat WHERE c_id = $course_id ORDER BY display_order";
|
|
$res = Database::query($sql);
|
|
$cats = array ();
|
|
while ($cat = Database::fetch_array($res)) {
|
|
$cats[] = $cat;
|
|
}
|
|
return $cats;
|
|
}
|
|
|
|
/**
|
|
* Get a group category
|
|
* @param int $id The category id
|
|
* @param string $course_code The course (default = current course)
|
|
* @return array
|
|
*/
|
|
public static function get_category($id, $course_code = null)
|
|
{
|
|
if (empty($id)) {
|
|
return array();
|
|
}
|
|
$course_info = api_get_course_info($course_code);
|
|
$course_id = $course_info['real_id'];
|
|
$id = Database::escape_string($id);
|
|
$table_group_cat = Database :: get_course_table(TABLE_GROUP_CATEGORY);
|
|
$sql = "SELECT * FROM $table_group_cat WHERE c_id = $course_id AND id = $id LIMIT 1";
|
|
$res = Database::query($sql);
|
|
return Database::fetch_array($res);
|
|
}
|
|
|
|
/**
|
|
* Get a group category
|
|
* @param string $title
|
|
* @param string $course_code The course (default = current course)
|
|
* @return array
|
|
*/
|
|
public static function getCategoryByTitle($title, $course_code = null)
|
|
{
|
|
$title = trim($title);
|
|
|
|
if (empty($title)) {
|
|
return array();
|
|
}
|
|
|
|
$course_info = api_get_course_info($course_code);
|
|
$course_id = $course_info['real_id'];
|
|
$title = Database::escape_string($title);
|
|
$table_group_cat = Database::get_course_table(TABLE_GROUP_CATEGORY);
|
|
$sql = "SELECT * FROM $table_group_cat
|
|
WHERE c_id = $course_id AND title = '$title' LIMIT 1";
|
|
$res = Database::query($sql);
|
|
$category = array();
|
|
if (Database::num_rows($res)) {
|
|
$category = Database::fetch_array($res, 'ASSOC');
|
|
}
|
|
return $category;
|
|
}
|
|
|
|
/**
|
|
* Get the unique category of a given group
|
|
* @param int $group_id The id of the group
|
|
* @param string $course_code The course in which the group is (default =
|
|
* current course)
|
|
* @return array The category
|
|
*/
|
|
public static function get_category_from_group($group_id, $course_code = null)
|
|
{
|
|
$table_group = Database :: get_course_table(TABLE_GROUP);
|
|
$table_group_cat = Database :: get_course_table(TABLE_GROUP_CATEGORY);
|
|
|
|
if (empty($group_id)) {
|
|
return array();
|
|
}
|
|
|
|
$course_info = api_get_course_info($course_code);
|
|
$course_id = $course_info['real_id'];
|
|
|
|
$group_id = Database::escape_string($group_id);
|
|
$sql = "SELECT gc.* FROM $table_group_cat gc, $table_group g
|
|
WHERE gc.c_id = $course_id AND
|
|
g.c_id = $course_id AND
|
|
gc.id = g.category_id AND g.id= $group_id LIMIT 1";
|
|
$res = Database::query($sql);
|
|
$cat = array();
|
|
if (Database::num_rows($res)) {
|
|
$cat = Database::fetch_array($res);
|
|
}
|
|
return $cat;
|
|
}
|
|
|
|
/**
|
|
* Delete a group category
|
|
* @param int $cat_id The id of the category to delete
|
|
* @param string $course_code The code in which the category should be
|
|
* deleted (default = current course)
|
|
*/
|
|
public static function delete_category($cat_id, $course_code = null)
|
|
{
|
|
$course_info = api_get_course_info($course_code);
|
|
$course_id = $course_info['real_id'];
|
|
|
|
$table_group = Database :: get_course_table(TABLE_GROUP);
|
|
$table_group_cat = Database :: get_course_table(TABLE_GROUP_CATEGORY);
|
|
$cat_id = Database::escape_string($cat_id);
|
|
$sql = "SELECT id FROM $table_group WHERE c_id = $course_id AND category_id='".$cat_id."'";
|
|
$res = Database::query($sql);
|
|
if (Database::num_rows($res) > 0) {
|
|
$groups_to_delete = array ();
|
|
while ($group = Database::fetch_object($res)) {
|
|
$groups_to_delete[] = $group->id;
|
|
}
|
|
self :: delete_groups($groups_to_delete);
|
|
}
|
|
$sql = "DELETE FROM $table_group_cat WHERE c_id = $course_id AND id='".$cat_id."'";
|
|
Database::query($sql);
|
|
}
|
|
|
|
/**
|
|
* Create group category
|
|
* @param string $title The title of the new category
|
|
* @param string $description The description of the new category
|
|
* @param bool $self_registration_allowed
|
|
* @param bool $self_unregistration_allowed
|
|
* @param int $max_number_of_students
|
|
* @param int $groups_per_user
|
|
*/
|
|
public static function create_category(
|
|
$title,
|
|
$description,
|
|
$doc_state,
|
|
$work_state,
|
|
$calendar_state,
|
|
$announcements_state,
|
|
$forum_state,
|
|
$wiki_state,
|
|
$chat_state = 1,
|
|
$self_registration_allowed = 0,
|
|
$self_unregistration_allowed = 0,
|
|
$maximum_number_of_students = 8,
|
|
$groups_per_user = 0
|
|
) {
|
|
$table_group_category = Database :: get_course_table(TABLE_GROUP_CATEGORY);
|
|
|
|
$course_id = api_get_course_int_id();
|
|
|
|
$sql = "SELECT MAX(display_order)+1 as new_order FROM $table_group_category WHERE c_id = $course_id ";
|
|
$res = Database::query($sql);
|
|
$obj = Database::fetch_object($res);
|
|
if (!isset ($obj->new_order)) {
|
|
$obj->new_order = 1;
|
|
}
|
|
$sql = "INSERT INTO ".$table_group_category." SET
|
|
c_id = $course_id ,
|
|
title='".Database::escape_string($title)."',
|
|
display_order ='".$obj->new_order."',
|
|
description='".Database::escape_string($description)."',
|
|
doc_state = '".Database::escape_string($doc_state)."',
|
|
work_state = '".Database::escape_string($work_state)."',
|
|
calendar_state = '".Database::escape_string($calendar_state)."',
|
|
announcements_state = '".Database::escape_string($announcements_state)."',
|
|
forum_state = '".Database::escape_string($forum_state)."',
|
|
wiki_state = '".Database::escape_string($wiki_state)."',
|
|
chat_state = '".Database::escape_string($chat_state)."',
|
|
groups_per_user = '".Database::escape_string($groups_per_user)."',
|
|
self_reg_allowed = '".Database::escape_string($self_registration_allowed)."',
|
|
self_unreg_allowed = '".Database::escape_string($self_unregistration_allowed)."',
|
|
max_student = '".Database::escape_string($maximum_number_of_students)."' ";
|
|
Database::query($sql);
|
|
$categoryId = Database::insert_id();
|
|
if ($categoryId == self::VIRTUAL_COURSE_CATEGORY) {
|
|
$sql = "UPDATE ".$table_group_category." SET id = ". ($categoryId +1)." WHERE c_id = $course_id AND id = $categoryId";
|
|
Database::query($sql);
|
|
return $categoryId +1;
|
|
}
|
|
return $categoryId;
|
|
}
|
|
|
|
/**
|
|
* Update group category
|
|
*
|
|
* @param int $id
|
|
* @param string $title
|
|
* @param string $description
|
|
* @param $doc_state
|
|
* @param $work_state
|
|
* @param $calendar_state
|
|
* @param $announcements_state
|
|
* @param $forum_state
|
|
* @param $wiki_state
|
|
* @param $chat_state
|
|
* @param $self_registration_allowed
|
|
* @param $self_unregistration_allowed
|
|
* @param $maximum_number_of_students
|
|
* @param $groups_per_user
|
|
*/
|
|
public static function update_category(
|
|
$id,
|
|
$title,
|
|
$description,
|
|
$doc_state,
|
|
$work_state,
|
|
$calendar_state,
|
|
$announcements_state,
|
|
$forum_state,
|
|
$wiki_state,
|
|
$chat_state,
|
|
$self_registration_allowed,
|
|
$self_unregistration_allowed,
|
|
$maximum_number_of_students,
|
|
$groups_per_user
|
|
) {
|
|
$table_group_category = Database::get_course_table(TABLE_GROUP_CATEGORY);
|
|
$id = Database::escape_string($id);
|
|
|
|
$course_id = api_get_course_int_id();
|
|
|
|
$sql = "UPDATE ".$table_group_category."SET
|
|
title='".Database::escape_string($title)."',
|
|
description='".Database::escape_string($description)."',
|
|
doc_state = '".Database::escape_string($doc_state)."',
|
|
work_state = '".Database::escape_string($work_state)."',
|
|
calendar_state = '".Database::escape_string($calendar_state)."',
|
|
announcements_state = '".Database::escape_string($announcements_state)."',
|
|
forum_state = '".Database::escape_string($forum_state)."',
|
|
wiki_state = '".Database::escape_string($wiki_state)."',
|
|
chat_state = '".Database::escape_string($chat_state)."',
|
|
groups_per_user = '".Database::escape_string($groups_per_user)."',
|
|
self_reg_allowed = '".Database::escape_string($self_registration_allowed)."',
|
|
self_unreg_allowed = '".Database::escape_string($self_unregistration_allowed)."',
|
|
max_student = ".Database::escape_string($maximum_number_of_students)."
|
|
WHERE c_id = $course_id AND id = $id";
|
|
Database::query($sql);
|
|
|
|
// Updating all groups inside this category
|
|
$groups = self::get_group_list($id);
|
|
|
|
if (!empty($groups)) {
|
|
foreach ($groups as $group) {
|
|
GroupManager::set_group_properties(
|
|
$group['id'],
|
|
$group['name'],
|
|
$group['description'],
|
|
$maximum_number_of_students,
|
|
$doc_state,
|
|
$work_state,
|
|
$calendar_state,
|
|
$announcements_state,
|
|
$forum_state,
|
|
$wiki_state,
|
|
$chat_state,
|
|
$self_registration_allowed,
|
|
$self_unregistration_allowed
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the number of groups of the user with the greatest number of
|
|
* subscriptions in the given category
|
|
*/
|
|
public static function get_current_max_groups_per_user($category_id = null, $course_code = null)
|
|
{
|
|
$course_info = api_get_course_info ($course_code);
|
|
$group_table = Database :: get_course_table(TABLE_GROUP);
|
|
$group_user_table = Database :: get_course_table(TABLE_GROUP_USER);
|
|
$sql = 'SELECT COUNT(gu.group_id) AS current_max FROM '.$group_user_table.' gu, '.$group_table.' g
|
|
WHERE g.c_id = '.$course_info['real_id'].' AND gu.group_id = g.id ';
|
|
if ($category_id != null) {
|
|
$category_id = Database::escape_string($category_id);
|
|
$sql .= ' AND g.category_id = '.$category_id;
|
|
}
|
|
$sql .= ' GROUP BY gu.user_id ORDER BY current_max DESC LIMIT 1';
|
|
$res = Database::query($sql);
|
|
$obj = Database::fetch_object($res);
|
|
return $obj->current_max;
|
|
}
|
|
|
|
/**
|
|
* Swaps the display-order of two categories
|
|
* @param int $id1 The id of the first category
|
|
* @param int $id2 The id of the second category
|
|
*/
|
|
public static function swap_category_order($id1, $id2)
|
|
{
|
|
$table_group_cat = Database :: get_course_table(TABLE_GROUP_CATEGORY);
|
|
$id1 = Database::escape_string($id1);
|
|
$id2 = Database::escape_string($id2);
|
|
|
|
$course_id = api_get_course_int_id();
|
|
|
|
|
|
$sql = "SELECT id,display_order FROM $table_group_cat WHERE id IN ($id1,$id2) AND c_id = $course_id ";
|
|
$res = Database::query($sql);
|
|
$cat1 = Database::fetch_object($res);
|
|
$cat2 = Database::fetch_object($res);
|
|
$sql = "UPDATE $table_group_cat SET display_order=$cat2->display_order WHERE id = $cat1->id AND c_id = $course_id ";
|
|
Database::query($sql);
|
|
$sql = "UPDATE $table_group_cat SET display_order=$cat1->display_order WHERE id = $cat2->id AND c_id = $course_id ";
|
|
Database::query($sql);
|
|
}
|
|
|
|
// GROUP USERS FUNCTIONS
|
|
|
|
/**
|
|
* Get all users from a given group
|
|
* @param int $group_id The group
|
|
* @param bool $load_extra_info
|
|
* @return array list of user id
|
|
*/
|
|
public static function get_users($group_id, $load_extra_info = false)
|
|
{
|
|
$group_user_table = Database :: get_course_table(TABLE_GROUP_USER);
|
|
$group_id = Database::escape_string($group_id);
|
|
$course_id = api_get_course_int_id();
|
|
$sql = "SELECT user_id FROM $group_user_table WHERE c_id = $course_id AND group_id = $group_id";
|
|
$res = Database::query($sql);
|
|
$users = array ();
|
|
while ($obj = Database::fetch_object($res)) {
|
|
if ($load_extra_info) {
|
|
$users[] = api_get_user_info($obj->user_id);
|
|
} else {
|
|
$users[] = $obj->user_id;
|
|
}
|
|
}
|
|
return $users;
|
|
}
|
|
|
|
/**
|
|
* @param int $group_id
|
|
* @return array
|
|
*/
|
|
public static function getStudentsAndTutors($group_id)
|
|
{
|
|
$group_user_table = Database :: get_course_table(TABLE_GROUP_USER);
|
|
$tutor_user_table = Database :: get_course_table(TABLE_GROUP_TUTOR);
|
|
$course_id = api_get_course_int_id();
|
|
$group_id = intval($group_id);
|
|
$sql = "SELECT user_id FROM $group_user_table WHERE c_id = $course_id AND group_id = $group_id";
|
|
$res = Database::query($sql);
|
|
$users = array();
|
|
|
|
while ($obj = Database::fetch_object($res)) {
|
|
$users[] = api_get_user_info($obj->user_id);
|
|
}
|
|
|
|
$sql = "SELECT user_id FROM $tutor_user_table WHERE c_id = $course_id AND group_id = $group_id";
|
|
$res = Database::query($sql);
|
|
while ($obj = Database::fetch_object($res)) {
|
|
$users[] = api_get_user_info($obj->user_id);
|
|
}
|
|
return $users;
|
|
}
|
|
|
|
/**
|
|
* Get only tutors from a group
|
|
* @param int $group_id
|
|
* @return array
|
|
*/
|
|
public static function getTutors($group_id)
|
|
{
|
|
$tutor_user_table = Database :: get_course_table(TABLE_GROUP_TUTOR);
|
|
$course_id = api_get_course_int_id();
|
|
$group_id = intval($group_id);
|
|
|
|
$sql = "SELECT user_id FROM $tutor_user_table WHERE c_id = $course_id AND group_id = $group_id";
|
|
$res = Database::query($sql);
|
|
while ($obj = Database::fetch_object($res)) {
|
|
$users[] = api_get_user_info($obj->user_id);
|
|
}
|
|
return $users;
|
|
}
|
|
|
|
/**
|
|
* Get only students from a group (not tutors)
|
|
* @param int $group_id
|
|
* @return array
|
|
*/
|
|
public static function getStudents($group_id)
|
|
{
|
|
$group_user_table = Database :: get_course_table(TABLE_GROUP_USER);
|
|
$course_id = api_get_course_int_id();
|
|
$group_id = intval($group_id);
|
|
$sql = "SELECT user_id FROM $group_user_table WHERE c_id = $course_id AND group_id = $group_id";
|
|
$res = Database::query($sql);
|
|
$users = array();
|
|
|
|
while ($obj = Database::fetch_object($res)) {
|
|
$users[] = api_get_user_info($obj->user_id);
|
|
}
|
|
return $users;
|
|
}
|
|
|
|
/**
|
|
* Returns users belonging to any of the group
|
|
*
|
|
* @param array $groups list of group ids
|
|
* @return array list of user ids
|
|
*/
|
|
public static function get_groups_users($groups = array())
|
|
{
|
|
$result = array();
|
|
$tbl_group_user = Database::get_course_table(TABLE_GROUP_USER);
|
|
$course_id = api_get_course_int_id();
|
|
|
|
$groups = array_map('intval', $groups);
|
|
$groups = implode(', ', $groups); //protect individual elements with surrounding quotes
|
|
$sql = "SELECT DISTINCT user_id
|
|
FROM $tbl_group_user gu
|
|
WHERE c_id = $course_id AND gu.group_id IN ($groups)";
|
|
$rs = Database::query($sql);
|
|
while ($row = Database::fetch_array($rs)) {
|
|
$result[] = $row['user_id'];
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Fill the groups with students.
|
|
* The algorithm takes care to first fill the groups with the least # of users.
|
|
* Analysis
|
|
* There was a problem with the "ALL" setting.
|
|
* When max # of groups is set to all, the value is sometimes NULL and sometimes ALL
|
|
* and in both cased the query does not work as expected.
|
|
* Stupid solution (currently implemented: set ALL to a big number (INFINITE) and things are solved :)
|
|
* Better solution: that's up to you.
|
|
*
|
|
* Note
|
|
* Throughout Dokeos there is some confusion about "course id" and "course code"
|
|
* The code is e.g. TEST101, but sometimes a variable that is called courseID also contains a course code string.
|
|
* However, there is also a integer course_id that uniquely identifies the course.
|
|
* ywarnier:> Now the course_id has been removed (25/1/2005)
|
|
* The databases are als very inconsistent in this.
|
|
*
|
|
* @author Chrisptophe Gesche <christophe.geshe@claroline.net>,
|
|
* Hugues Peeters <hugues.peeters@claroline.net> - original version
|
|
* @author Roan Embrechts - virtual course support, code cleaning
|
|
* @author Bart Mollet - code cleaning, use other GroupManager-functions
|
|
* @return void
|
|
*/
|
|
public static function fill_groups($group_ids)
|
|
{
|
|
global $_course;
|
|
|
|
$group_ids = is_array($group_ids) ? $group_ids : array ($group_ids);
|
|
$group_ids = array_map('intval', $group_ids);
|
|
|
|
if (api_is_course_coach()) {
|
|
for ($i=0 ; $i< count($group_ids) ; $i++) {
|
|
if (!api_is_element_in_the_session(TOOL_GROUP, $group_ids[$i])){
|
|
array_splice($group_ids,$i,1);
|
|
$i--;
|
|
}
|
|
}
|
|
if (count($group_ids)==0) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
$category = self::get_category_from_group($group_ids[0]);
|
|
|
|
$groups_per_user = $category['groups_per_user'];
|
|
$group_table = Database :: get_course_table(TABLE_GROUP);
|
|
$group_user_table = Database :: get_course_table(TABLE_GROUP_USER);
|
|
$session_id = api_get_session_id();
|
|
|
|
$complete_user_list = CourseManager :: get_real_and_linked_user_list($_course['code'], true, $session_id);
|
|
$number_groups_per_user = ($groups_per_user == self::GROUP_PER_MEMBER_NO_LIMIT ? self::INFINITE : $groups_per_user);
|
|
|
|
/*
|
|
* Retrieve all the groups where enrollment is still allowed
|
|
* (reverse) ordered by the number of place available
|
|
*/
|
|
|
|
$course_id = api_get_course_int_id();
|
|
$sql = "SELECT g.id gid, g.max_student-count(ug.user_id) nbPlaces, g.max_student
|
|
FROM ".$group_table." g
|
|
LEFT JOIN ".$group_user_table." ug ON
|
|
g.c_id = $course_id AND ug.c_id = $course_id AND g.id = ug.group_id
|
|
WHERE
|
|
g.id IN (".implode(',', $group_ids).")
|
|
GROUP BY (g.id)
|
|
HAVING (nbPlaces > 0 OR g.max_student = ".self::MEMBER_PER_GROUP_NO_LIMIT.")
|
|
ORDER BY nbPlaces DESC";
|
|
$sql_result = Database::query($sql);
|
|
$group_available_place = array();
|
|
while ($group = Database::fetch_array($sql_result, 'ASSOC')) {
|
|
$group_available_place[$group['gid']] = $group['nbPlaces'];
|
|
}
|
|
|
|
/*
|
|
* Retrieve course users (reverse) ordered by the number
|
|
* of group they are already enrolled
|
|
*/
|
|
for ($i = 0; $i < count($complete_user_list); $i ++) {
|
|
//find # of groups the user is enrolled in
|
|
$number_of_groups = self :: user_in_number_of_groups($complete_user_list[$i]["user_id"], $category['id']);
|
|
//add # of groups to user list
|
|
$complete_user_list[$i]['number_groups_left'] = $number_groups_per_user - $number_of_groups;
|
|
}
|
|
|
|
//first sort by user_id to filter out duplicates
|
|
$complete_user_list = TableSort :: sort_table($complete_user_list, 'user_id');
|
|
$complete_user_list = self :: filter_duplicates($complete_user_list, 'user_id');
|
|
$complete_user_list = self :: filter_only_students($complete_user_list);
|
|
|
|
//now sort by # of group left
|
|
$complete_user_list = TableSort :: sort_table($complete_user_list, 'number_groups_left', SORT_DESC);
|
|
$userToken = array ();
|
|
foreach ($complete_user_list as $this_user) {
|
|
if ($this_user['number_groups_left'] > 0) {
|
|
$userToken[$this_user['user_id']] = $this_user['number_groups_left'];
|
|
}
|
|
}
|
|
|
|
$changed = true;
|
|
while ($changed) {
|
|
$changed = false;
|
|
reset($group_available_place);
|
|
arsort($group_available_place);
|
|
reset($userToken);
|
|
arsort($userToken);
|
|
|
|
foreach ($group_available_place as $group_id => $place) {
|
|
foreach ($userToken as $user_id => $places) {
|
|
if (self :: can_user_subscribe($user_id, $group_id)) {
|
|
|
|
self :: subscribe_users($user_id, $group_id);
|
|
$group_available_place[$group_id]--;
|
|
//$userToken[$user_id]--;
|
|
unset($userToken[$user_id]);
|
|
$changed = true;
|
|
break;
|
|
}
|
|
}
|
|
if ($changed) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get the number of students in a group.
|
|
* @param int $group_id
|
|
* @return int Number of students in the given group.
|
|
*/
|
|
public static function number_of_students($group_id, $course_id = null)
|
|
{
|
|
$table_group_user = Database :: get_course_table(TABLE_GROUP_USER);
|
|
$group_id = Database::escape_string($group_id);
|
|
if (empty($course_id)) {
|
|
$course_id = api_get_course_int_id();
|
|
} else {
|
|
$course_id = intval($course_id);
|
|
}
|
|
$sql = "SELECT COUNT(*) AS number_of_students FROM $table_group_user WHERE c_id = $course_id AND group_id = $group_id";
|
|
$db_result = Database::query($sql);
|
|
$db_object = Database::fetch_object($db_result);
|
|
return $db_object->number_of_students;
|
|
}
|
|
|
|
/**
|
|
* Maximum number of students in a group
|
|
* @param int $group_id
|
|
* @return int Maximum number of students in the given group.
|
|
*/
|
|
public static function maximum_number_of_students($group_id)
|
|
{
|
|
$table_group = Database :: get_course_table(TABLE_GROUP);
|
|
$group_id = Database::escape_string($group_id);
|
|
$course_id = api_get_course_int_id();
|
|
$db_result = Database::query("SELECT max_student FROM $table_group WHERE c_id = $course_id AND id = $group_id");
|
|
$db_object = Database::fetch_object($db_result);
|
|
if ($db_object->max_student == 0) {
|
|
return self::INFINITE;
|
|
}
|
|
return $db_object->max_student;
|
|
}
|
|
|
|
/**
|
|
* Number of groups of a user
|
|
* @param int $user_id
|
|
* @return int The number of groups the user is subscribed in.
|
|
*/
|
|
public static function user_in_number_of_groups($user_id, $cat_id = null)
|
|
{
|
|
$table_group_user = Database :: get_course_table(TABLE_GROUP_USER);
|
|
$table_group = Database :: get_course_table(TABLE_GROUP);
|
|
$user_id = Database::escape_string($user_id);
|
|
$cat_id = Database::escape_string($cat_id);
|
|
|
|
$course_id = api_get_course_int_id();
|
|
$cat_condition = '';
|
|
if (!empty($cat_id)) {
|
|
$cat_condition = " AND g.category_id = $cat_id ";
|
|
}
|
|
|
|
$sql = "SELECT COUNT(*) AS number_of_groups FROM $table_group_user gu, $table_group g
|
|
WHERE gu.c_id = $course_id AND
|
|
g.c_id = $course_id AND
|
|
gu.user_id = $user_id AND
|
|
g.id = gu.group_id $cat_condition";
|
|
$db_result = Database::query($sql);
|
|
$db_object = Database::fetch_object($db_result);
|
|
return $db_object->number_of_groups;
|
|
}
|
|
|
|
/**
|
|
* Is sef-registration allowed?
|
|
* @param int $user_id
|
|
* @param int $group_id
|
|
* @return bool TRUE if self-registration is allowed in the given group.
|
|
*/
|
|
public static function is_self_registration_allowed($user_id, $group_id)
|
|
{
|
|
$course_id = api_get_course_int_id();
|
|
if (!$user_id > 0)
|
|
return false;
|
|
$table_group = Database :: get_course_table(TABLE_GROUP);
|
|
$group_id= intval($group_id);
|
|
if (isset($group_id)) {
|
|
$sql = "SELECT self_registration_allowed FROM $table_group WHERE c_id = $course_id AND id = $group_id";
|
|
$db_result = Database::query($sql);
|
|
$db_object = Database::fetch_object($db_result);
|
|
return $db_object->self_registration_allowed == 1 && self :: can_user_subscribe($user_id, $group_id);
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Is sef-unregistration allowed?
|
|
* @param int $user_id
|
|
* @param int $group_id
|
|
* @return bool TRUE if self-unregistration is allowed in the given group.
|
|
*/
|
|
public static function is_self_unregistration_allowed($user_id, $group_id)
|
|
{
|
|
if (!$user_id > 0)
|
|
return false;
|
|
$table_group = Database :: get_course_table(TABLE_GROUP);
|
|
$group_id = Database::escape_string($group_id);
|
|
$course_id = api_get_course_int_id();
|
|
$db_result = Database::query('SELECT self_unregistration_allowed FROM '.$table_group.' WHERE c_id = '.$course_id.' AND id = '.$group_id);
|
|
$db_object = Database::fetch_object($db_result);
|
|
return $db_object->self_unregistration_allowed == 1 && self :: can_user_unsubscribe($user_id, $group_id);
|
|
}
|
|
|
|
/**
|
|
* Is user subscribed in group?
|
|
* @param int $user_id
|
|
* @param int $group_id
|
|
* @return bool TRUE if given user is subscribed in given group
|
|
*/
|
|
public static function is_subscribed($user_id, $group_id)
|
|
{
|
|
if(empty($user_id) or empty($group_id)){return false;}
|
|
$table_group_user = Database :: get_course_table(TABLE_GROUP_USER);
|
|
$group_id = Database::escape_string($group_id);
|
|
$user_id = Database::escape_string($user_id);
|
|
$course_id = api_get_course_int_id();
|
|
$sql = 'SELECT 1 FROM '.$table_group_user.' WHERE c_id = '.$course_id.' AND group_id = '.$group_id.' AND user_id = '.$user_id;
|
|
$db_result = Database::query($sql);
|
|
return Database::num_rows($db_result) > 0;
|
|
}
|
|
|
|
/**
|
|
* Can a user subscribe to a specified group in a course
|
|
* @param int $user_id
|
|
* @param int $group_id
|
|
* @return bool TRUE if given user can be subscribed in given group
|
|
*/
|
|
public static function can_user_subscribe($user_id, $group_id)
|
|
{
|
|
global $_course;
|
|
$course_code = $_course['sysCode'];
|
|
$category = self :: get_category_from_group($group_id);
|
|
$result = CourseManager :: is_user_subscribed_in_real_or_linked_course($user_id, $course_code);
|
|
$result = !self :: is_subscribed($user_id, $group_id);
|
|
$result &= (self :: number_of_students($group_id) < self :: maximum_number_of_students($group_id));
|
|
if ($category['groups_per_user'] == self::GROUP_PER_MEMBER_NO_LIMIT) {
|
|
$category['groups_per_user'] = self::INFINITE;
|
|
}
|
|
$result &= (self :: user_in_number_of_groups($user_id, $category['id']) < $category['groups_per_user']);
|
|
$result &= !self :: is_tutor_of_group($user_id, $group_id);
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Can a user unsubscribe to a specified group in a course
|
|
* @param int $user_id
|
|
* @param int $group_id
|
|
* @return bool TRUE if given user can be unsubscribed from given group
|
|
* @internal for now, same as GroupManager::is_subscribed($user_id,$group_id)
|
|
*/
|
|
public static function can_user_unsubscribe($user_id, $group_id)
|
|
{
|
|
$result = self :: is_subscribed($user_id, $group_id);
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Get all subscribed users (students and tutors) from a group
|
|
* @param int $group_id
|
|
* @return array An array with information of all users from the given group.
|
|
* (user_id, firstname, lastname, email)
|
|
*/
|
|
public static function get_subscribed_users($group_id)
|
|
{
|
|
$table_user = Database :: get_main_table(TABLE_MAIN_USER);
|
|
$table_group_user = Database :: get_course_table(TABLE_GROUP_USER);
|
|
$order_clause = api_sort_by_first_name() ? ' ORDER BY u.firstname, u.lastname' : ' ORDER BY u.lastname, u.firstname';
|
|
if (empty($group_id)) {
|
|
return array();
|
|
}
|
|
$group_id = intval($group_id);
|
|
$course_id = api_get_course_int_id();
|
|
|
|
$sql = "SELECT ug.id, u.user_id, u.lastname, u.firstname, u.email, u.username
|
|
FROM $table_user u INNER JOIN $table_group_user ug ON (ug.user_id = u.user_id)
|
|
WHERE ug.c_id = $course_id AND
|
|
ug.group_id = $group_id
|
|
$order_clause";
|
|
$db_result = Database::query($sql);
|
|
$users = array();
|
|
while ($user = Database::fetch_object($db_result)) {
|
|
$member['user_id'] = $user->user_id;
|
|
$member['firstname'] = $user->firstname;
|
|
$member['lastname'] = $user->lastname;
|
|
$member['email'] = $user->email;
|
|
$member['username'] = $user->username;
|
|
$users[$member['user_id']] = $member;
|
|
}
|
|
return $users;
|
|
}
|
|
|
|
/**
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* Get all subscribed tutors of a group
|
|
* @param int $group_id
|
|
* @return array An array with information of all users from the given group.
|
|
* (user_id, firstname, lastname, email)
|
|
*/
|
|
public static function get_subscribed_tutors($group_id, $id_only = false)
|
|
{
|
|
$table_user = Database :: get_main_table(TABLE_MAIN_USER);
|
|
$table_group_tutor = Database :: get_course_table(TABLE_GROUP_TUTOR);
|
|
$order_clause = api_sort_by_first_name() ? ' ORDER BY u.firstname, u.lastname' : ' ORDER BY u.lastname, u.firstname';
|
|
$group_id = Database::escape_string($group_id);
|
|
$course_id = api_get_course_int_id();
|
|
|
|
$sql = "SELECT tg.id, u.user_id, u.lastname, u.firstname, u.email
|
|
FROM ".$table_user." u, ".$table_group_tutor." tg
|
|
WHERE tg.c_id = $course_id AND
|
|
tg.group_id='".$group_id."' AND
|
|
tg.user_id=u.user_id".$order_clause;
|
|
$db_result = Database::query($sql);
|
|
$users = array ();
|
|
while ($user = Database::fetch_object($db_result)) {
|
|
if (!$id_only) {
|
|
$member['user_id'] = $user->user_id;
|
|
$member['firstname'] = $user->firstname;
|
|
$member['lastname'] = $user->lastname;
|
|
$member['email'] = $user->email;
|
|
$users[] = $member;
|
|
} else {
|
|
$users[]=$user->user_id;
|
|
}
|
|
}
|
|
return $users;
|
|
}
|
|
|
|
/**
|
|
* Subscribe user(s) to a specified group in current course
|
|
* @param mixed $user_ids Can be an array with user-id's or a single user-id
|
|
* @param int $group_id
|
|
* @return bool TRUE if successful
|
|
*/
|
|
public static function subscribe_users($user_ids, $group_id)
|
|
{
|
|
$user_ids = is_array($user_ids) ? $user_ids : array ($user_ids);
|
|
$result = true;
|
|
$course_id = api_get_course_int_id();
|
|
$table_group_user = Database :: get_course_table(TABLE_GROUP_USER);
|
|
if (!empty($user_ids)) {
|
|
foreach ($user_ids as $user_id) {
|
|
$user_id = Database::escape_string($user_id);
|
|
$group_id = Database::escape_string($group_id);
|
|
$sql = "INSERT INTO ".$table_group_user." (c_id, user_id, group_id)
|
|
VALUES ('$course_id', '".$user_id."', '".$group_id."')";
|
|
$result &= Database::query($sql);
|
|
}
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Subscribe tutor(s) to a specified group in current course
|
|
* @param mixed $user_ids Can be an array with user-id's or a single user-id
|
|
* @param int $group_id
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
* @see subscribe_users. This function is almost an exact copy of that function.
|
|
* @return bool TRUE if successful
|
|
*/
|
|
public static function subscribe_tutors($user_ids, $group_id)
|
|
{
|
|
$user_ids = is_array($user_ids) ? $user_ids : array ($user_ids);
|
|
$result = true;
|
|
$course_id = api_get_course_int_id();
|
|
$table_group_tutor = Database :: get_course_table(TABLE_GROUP_TUTOR);
|
|
|
|
foreach ($user_ids as $user_id) {
|
|
$user_id = Database::escape_string($user_id);
|
|
$group_id = Database::escape_string($group_id);
|
|
$sql = "INSERT INTO ".$table_group_tutor." (c_id, user_id, group_id)
|
|
VALUES ('$course_id', '".$user_id."', '".$group_id."')";
|
|
$result &= Database::query($sql);
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Unsubscribe user(s) from a specified group in current course
|
|
* @param mixed $user_ids Can be an array with user-id's or a single user-id
|
|
* @param int $group_id
|
|
* @return bool TRUE if successful
|
|
*/
|
|
public static function unsubscribe_users($user_ids, $group_id)
|
|
{
|
|
$user_ids = is_array($user_ids) ? $user_ids : array ($user_ids);
|
|
$table_group_user = Database :: get_course_table(TABLE_GROUP_USER);
|
|
$group_id = Database::escape_string($group_id);
|
|
$course_id = api_get_course_int_id();
|
|
$sql = 'DELETE FROM '.$table_group_user.'
|
|
WHERE c_id = '.$course_id.' AND group_id = '.$group_id.' AND user_id IN ('.implode(',', $user_ids).')';
|
|
Database::query($sql);
|
|
}
|
|
|
|
/**
|
|
* Unsubscribe all users from one or more groups
|
|
* @param mixed $group_id Can be an array with group-id's or a single group-id
|
|
* @return bool TRUE if successful
|
|
*/
|
|
public static function unsubscribe_all_users($group_ids)
|
|
{
|
|
$course_id = api_get_course_int_id();
|
|
|
|
$group_ids = is_array($group_ids) ? $group_ids : array ($group_ids);
|
|
$group_ids = array_map('intval', $group_ids);
|
|
if( count($group_ids) > 0) {
|
|
if(api_is_course_coach()) {
|
|
for($i=0 ; $i<count($group_ids) ; $i++) {
|
|
if(!api_is_element_in_the_session(TOOL_GROUP,$group_ids[$i])) {
|
|
array_splice($group_ids,$i,1);
|
|
$i--;
|
|
}
|
|
}
|
|
if(count($group_ids)==0) {
|
|
return false;
|
|
}
|
|
}
|
|
$table_group_user = Database :: get_course_table(TABLE_GROUP_USER);
|
|
$sql = 'DELETE FROM '.$table_group_user.' WHERE group_id IN ('.implode(',', $group_ids).') AND c_id = '.$course_id;
|
|
$result = Database::query($sql);
|
|
return $result;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Unsubscribe all tutors from one or more groups
|
|
* @param mixed $group_id Can be an array with group-id's or a single group-id
|
|
* @see unsubscribe_all_users. This function is almost an exact copy of that function.
|
|
* @return bool TRUE if successfull
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
*/
|
|
public static function unsubscribe_all_tutors($group_ids)
|
|
{
|
|
$course_id = api_get_course_int_id();
|
|
$group_ids = is_array($group_ids) ? $group_ids : array ($group_ids);
|
|
if( count($group_ids) > 0) {
|
|
$table_group_tutor = Database :: get_course_table(TABLE_GROUP_TUTOR);
|
|
$sql = 'DELETE FROM '.$table_group_tutor.' WHERE group_id IN ('.implode(',', $group_ids).') AND c_id = '.$course_id;
|
|
$result = Database::query($sql);
|
|
return $result;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Is the user a tutor of this group?
|
|
* @param $user_id the id of the user
|
|
* @param $group_id the id of the group
|
|
* @return boolean true/false
|
|
* @todo use the function user_has_access that includes this function
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
*/
|
|
public static function is_tutor_of_group($user_id,$group_id)
|
|
{
|
|
$table_group_tutor = Database :: get_course_table(TABLE_GROUP_TUTOR);
|
|
$user_id = Database::escape_string($user_id);
|
|
$group_id = Database::escape_string($group_id);
|
|
$course_id = api_get_course_int_id();
|
|
|
|
$sql = "SELECT * FROM ".$table_group_tutor." WHERE c_id = $course_id AND user_id='".$user_id."' AND group_id='".$group_id."'";
|
|
$result = Database::query($sql);
|
|
if (Database::num_rows($result)>0) {
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Is the user part of this group? This can be a tutor or a normal member
|
|
* you should use this function if the access to a tool or functionality is restricted to the people who are actually in the group
|
|
* before you had to check if the user was 1. a member of the group OR 2. a tutor of the group. This function combines both
|
|
* @param $user_id the id of the user
|
|
* @param $group_id the id of the group
|
|
* @return boolean true/false
|
|
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
|
|
*/
|
|
public static function is_user_in_group($user_id, $group_id)
|
|
{
|
|
$member = self :: is_subscribed($user_id,$group_id);
|
|
$tutor = self :: is_tutor_of_group($user_id,$group_id);
|
|
if ($member OR $tutor) {
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get all tutors for the current course.
|
|
* @return array An array with firstname, lastname and user_id for all
|
|
* tutors in the current course.
|
|
* @deprecated this function uses the old tutor implementation
|
|
*/
|
|
public static function get_all_tutors()
|
|
{
|
|
global $_course;
|
|
$course_user_table = Database :: get_main_table(TABLE_MAIN_COURSE_USER);
|
|
$user_table = Database :: get_main_table(TABLE_MAIN_USER);
|
|
$sql = "SELECT user.user_id AS user_id, user.lastname AS lastname, user.firstname AS firstname
|
|
FROM ".$user_table." user, ".$course_user_table." cu
|
|
WHERE cu.user_id=user.user_id
|
|
AND cu.tutor_id='1'
|
|
AND cu.course_code='".$_course['sysCode']."'";
|
|
$resultTutor = Database::query($sql);
|
|
$tutors = array ();
|
|
while ($tutor = Database::fetch_array($resultTutor)) {
|
|
$tutors[] = $tutor;
|
|
}
|
|
return $tutors;
|
|
}
|
|
|
|
|
|
/**
|
|
* Is user a tutor in current course
|
|
* @param int $user_id
|
|
* @return bool TRUE if given user is a tutor in the current course.
|
|
* @deprecated this function uses the old tutor implementation
|
|
*/
|
|
public static function is_tutor($user_id) {
|
|
global $_course;
|
|
$course_user_table = Database::get_main_table(TABLE_MAIN_COURSE_USER);
|
|
$user_id = Database::escape_string($user_id);
|
|
|
|
$sql = "SELECT tutor_id FROM ".$course_user_table."
|
|
WHERE user_id='".$user_id."' AND course_code='".$_course['code']."'"."AND tutor_id=1";
|
|
$db_result = Database::query($sql);
|
|
$result = (Database::num_rows($db_result) > 0);
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Get all group's from a given course in which a given user is unsubscribed
|
|
* @author Patrick Cool
|
|
* @param int course id
|
|
* retrieve the groups for
|
|
* @param integer $user_id: the ID of the user you want to know all its
|
|
* group memberships
|
|
*/
|
|
public static function get_group_ids ($course_id, $user_id) {
|
|
$groups = array();
|
|
$tbl_group = Database::get_course_table(TABLE_GROUP_USER);
|
|
$tbl_group_tutor = Database::get_course_table(TABLE_GROUP_TUTOR);
|
|
$user_id = intval($user_id);
|
|
$course_id = intval($course_id);
|
|
|
|
$sql = "SELECT group_id FROM $tbl_group WHERE c_id = $course_id AND user_id = '$user_id'";
|
|
$groupres = Database::query($sql);
|
|
|
|
if ($groupres) {
|
|
while ($myrow= Database::fetch_array($groupres))
|
|
$groups[]=$myrow['group_id'];
|
|
}
|
|
|
|
//Also loading if i'm the tutor
|
|
$sql = "SELECT group_id FROM $tbl_group_tutor WHERE c_id = $course_id AND user_id = '$user_id'";
|
|
$groupres = Database::query($sql);
|
|
if ($groupres) {
|
|
while ($myrow= Database::fetch_array($groupres)) {
|
|
$groups[]=$myrow['group_id'];
|
|
}
|
|
}
|
|
if (!empty($groups)) {
|
|
array_filter($groups);
|
|
}
|
|
return $groups;
|
|
}
|
|
|
|
/*
|
|
Group functions - these take virtual/linked courses into account when necessary
|
|
*/
|
|
/**
|
|
* Get a combined list of all users of the real course $course_code
|
|
* and all users in virtual courses linked to this course $course_code
|
|
* Filter user list: remove duplicate users; plus
|
|
* remove users that
|
|
* - are already in the current group $group_id;
|
|
* - do not have student status in these courses;
|
|
* - are not appointed as tutor (group assistent) for this group;
|
|
* - have already reached their maximum # of groups in this course.
|
|
*
|
|
* Originally to get the correct list of users a big SQL statement was used,
|
|
* but this has become more complicated now there is not just one real course but many virtual courses.
|
|
* Still, that could have worked as well.
|
|
*
|
|
* @version 1.1.3
|
|
* @author Roan Embrechts
|
|
*/
|
|
public static function get_complete_list_of_users_that_can_be_added_to_group ($course_code, $group_id) {
|
|
global $_course, $_user;
|
|
$category = self :: get_category_from_group($group_id, $course_code);
|
|
$number_of_groups_limit = $category['groups_per_user'] == self::GROUP_PER_MEMBER_NO_LIMIT ? self::INFINITE : $category['groups_per_user'];
|
|
$real_course_code = $_course['sysCode'];
|
|
$real_course_info = Database :: get_course_info($real_course_code);
|
|
$real_course_user_list = CourseManager :: get_user_list_from_course_code($real_course_code);
|
|
//get list of all virtual courses
|
|
$user_subscribed_course_list = CourseManager :: get_list_of_virtual_courses_for_specific_user_and_real_course($_user['user_id'], $real_course_code);
|
|
//add real course to the list
|
|
$user_subscribed_course_list[] = $real_course_info;
|
|
if (!is_array($user_subscribed_course_list)) {
|
|
return;
|
|
}
|
|
//for all courses...
|
|
foreach ($user_subscribed_course_list as $this_course) {
|
|
$this_course_code = $this_course['code'];
|
|
$course_user_list = CourseManager :: get_user_list_from_course_code($this_course_code);
|
|
//for all users in the course
|
|
foreach ($course_user_list as $this_user) {
|
|
$user_id = $this_user['user_id'];
|
|
$loginname = $this_user['username'];
|
|
$lastname = $this_user['lastname'];
|
|
$firstname = $this_user['firstname'];
|
|
$status = $this_user['status'];
|
|
//$role = $this_user['role'];
|
|
$tutor_id = $this_user['tutor_id'];
|
|
$full_name = api_get_person_name($firstname, $lastname);
|
|
if ($lastname == "" || $firstname == '') {
|
|
$full_name = $loginname;
|
|
}
|
|
$complete_user['user_id'] = $user_id;
|
|
$complete_user['full_name'] = $full_name;
|
|
$complete_user['firstname'] = $firstname;
|
|
$complete_user['lastname'] = $lastname;
|
|
$complete_user['status'] = $status;
|
|
$complete_user['tutor_id'] = $tutor_id;
|
|
$student_number_of_groups = self :: user_in_number_of_groups($user_id, $category['id']);
|
|
//filter: only add users that have not exceeded their maximum amount of groups
|
|
if ($student_number_of_groups < $number_of_groups_limit) {
|
|
$complete_user_list[] = $complete_user;
|
|
}
|
|
}
|
|
}
|
|
if (is_array($complete_user_list)) {
|
|
//sort once, on array field "full_name"
|
|
$complete_user_list = TableSort :: sort_table($complete_user_list, "full_name");
|
|
//filter out duplicates, based on field "user_id"
|
|
$complete_user_list = self :: filter_duplicates($complete_user_list, "user_id");
|
|
$complete_user_list = self :: filter_users_already_in_group($complete_user_list, $group_id);
|
|
|
|
}
|
|
return $complete_user_list;
|
|
}
|
|
/**
|
|
* Filter out duplicates in a multidimensional array
|
|
* by comparing field $compare_field.
|
|
*
|
|
* @param $user_array_in list of users (must be sorted).
|
|
* @param string $compare_field, the field to be compared
|
|
*/
|
|
public static function filter_duplicates ($user_array_in, $compare_field) {
|
|
$total_number = count($user_array_in);
|
|
$user_array_out[0] = $user_array_in[0];
|
|
$count_out = 0;
|
|
for ($count_in = 1; $count_in < $total_number; $count_in ++) {
|
|
if ($user_array_in[$count_in][$compare_field] != $user_array_out[$count_out][$compare_field]) {
|
|
$count_out ++;
|
|
$user_array_out[$count_out] = $user_array_in[$count_in];
|
|
}
|
|
}
|
|
return $user_array_out;
|
|
}
|
|
/**
|
|
* Filters from the array $user_array_in the users already in the group $group_id.
|
|
*/
|
|
public static function filter_users_already_in_group ($user_array_in, $group_id) {
|
|
foreach ($user_array_in as $this_user) {
|
|
if (!self :: is_subscribed($this_user['user_id'], $group_id)) {
|
|
$user_array_out[] = $this_user;
|
|
}
|
|
}
|
|
return $user_array_out;
|
|
}
|
|
|
|
/**
|
|
* Remove all users that are not students and all users who have tutor status
|
|
* from the list.
|
|
*/
|
|
public static function filter_only_students($user_array_in) {
|
|
$user_array_out = array ();
|
|
foreach ($user_array_in as $this_user) {
|
|
//if ($this_user['status_rel'] == STUDENT && $this_user['tutor_id'] == 0) {
|
|
if (api_get_session_id()) {
|
|
if ($this_user['status_session'] == 0) {
|
|
$user_array_out[] = $this_user;
|
|
}
|
|
} else {
|
|
if ($this_user['status_rel'] == STUDENT) {
|
|
$user_array_out[] = $this_user;
|
|
}
|
|
}
|
|
}
|
|
return $user_array_out;
|
|
}
|
|
|
|
/**
|
|
* Check if a user has access to a certain group tool
|
|
* @param int $user_id The user id
|
|
* @param int $group_id The group id
|
|
* @param constant $tool The tool to check the access rights. This should be
|
|
* one of constants: GROUP_TOOL_DOCUMENTS
|
|
* @return bool True if the given user has access to the given tool in the
|
|
* given course.
|
|
*/
|
|
public static function user_has_access($user_id, $group_id, $tool) {
|
|
// Admin have access everywhere
|
|
if (api_is_platform_admin()) {
|
|
return true;
|
|
}
|
|
|
|
// Course admin also have access to everything
|
|
if (api_is_allowed_to_edit()) {
|
|
return true;
|
|
}
|
|
|
|
switch ($tool) {
|
|
case self::GROUP_TOOL_FORUM :
|
|
$state_key = 'forum_state';
|
|
break;
|
|
case self::GROUP_TOOL_DOCUMENTS :
|
|
$state_key = 'doc_state';
|
|
break;
|
|
case self::GROUP_TOOL_CALENDAR :
|
|
$state_key = 'calendar_state';
|
|
break;
|
|
case self::GROUP_TOOL_ANNOUNCEMENT :
|
|
$state_key = 'announcements_state';
|
|
break;
|
|
case self::GROUP_TOOL_WORK :
|
|
$state_key = 'work_state';
|
|
break;
|
|
case self::GROUP_TOOL_WIKI :
|
|
$state_key = 'wiki_state';
|
|
break;
|
|
case self::GROUP_TOOL_CHAT :
|
|
$state_key = 'chat_state';
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
|
|
$user_is_in_group = self::is_user_in_group($user_id, $group_id);
|
|
|
|
// Check group properties
|
|
$group_info = self :: get_group_properties($group_id);
|
|
|
|
/*if (api_get_setting('allow_group_categories') == 'true') {
|
|
|
|
// Check if group category exists
|
|
$category_group_info = self::get_category_from_group($group_id);
|
|
|
|
if (!empty($category_group_info)) {
|
|
// If exists check the category group status first
|
|
if ($category_group_info[$state_key] == self::TOOL_NOT_AVAILABLE) {
|
|
return false;
|
|
} elseif($category_group_info[$state_key] == self::TOOL_PRIVATE && !$user_is_in_group) {
|
|
return false;
|
|
}
|
|
}
|
|
}*/
|
|
|
|
// is_user_in_group() is more complete that the is_subscribed() function
|
|
|
|
if ($group_info[$state_key] == self::TOOL_NOT_AVAILABLE) {
|
|
return false;
|
|
} elseif ($group_info[$state_key] == self::TOOL_PUBLIC) {
|
|
return true;
|
|
} elseif (api_is_allowed_to_edit(false,true)) {
|
|
return true;
|
|
} elseif($group_info['tutor_id'] == $user_id) { //this tutor implementation was dropped
|
|
return true;
|
|
} elseif($group_info[$state_key] == self::TOOL_PRIVATE && !$user_is_in_group) {
|
|
return false;
|
|
} else {
|
|
return $user_is_in_group;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get all groups where a specific user is subscribed
|
|
*/
|
|
public static function get_user_group_name ($user_id) {
|
|
$table_group_user = Database::get_course_table(TABLE_GROUP_USER);
|
|
$table_group = Database::get_course_table(TABLE_GROUP);
|
|
$user_id = intval($user_id);
|
|
$course_id = api_get_course_int_id();
|
|
$sql_groups = "SELECT name FROM $table_group g INNER JOIN $table_group_user gu
|
|
ON (gu.group_id=g.id)
|
|
WHERE gu.c_id= $course_id AND
|
|
g.c_id= $course_id AND
|
|
gu.user_id = $user_id";
|
|
$res = Database::query($sql_groups);
|
|
$groups=array();
|
|
while ($group = Database::fetch_array($res)) {
|
|
$groups[] .= $group['name'];
|
|
}
|
|
return $groups;
|
|
}
|
|
|
|
/**
|
|
*
|
|
* see : fill_groups
|
|
* Fill the groups with students.
|
|
*
|
|
* note : optimize fill_groups_list <--> fill_groups
|
|
* @param array $group_ids
|
|
* @return array|bool
|
|
*/
|
|
public static function fill_groups_list($group_ids)
|
|
{
|
|
$group_ids = is_array($group_ids) ? $group_ids : array($group_ids);
|
|
$group_ids = array_map('intval', $group_ids);
|
|
|
|
if (api_is_course_coach()) {
|
|
for($i=0 ; $i<count($group_ids) ; $i++) {
|
|
if(!api_is_element_in_the_session(TOOL_GROUP,$group_ids[$i])) {
|
|
array_splice($group_ids,$i,1);
|
|
$i--;
|
|
}
|
|
}
|
|
if (count($group_ids)==0){
|
|
return false;}
|
|
}
|
|
|
|
global $_course;
|
|
$category = self::get_category_from_group($group_ids[0]);
|
|
$groups_per_user = $category['groups_per_user'];
|
|
$group_table = Database :: get_course_table(TABLE_GROUP);
|
|
$group_user_table = Database :: get_course_table(TABLE_GROUP_USER);
|
|
$session_id = api_get_session_id();
|
|
$complete_user_list = CourseManager :: get_real_and_linked_user_list($_course['sysCode'], true, $session_id);
|
|
$number_groups_per_user = ($groups_per_user == self::GROUP_PER_MEMBER_NO_LIMIT ? self::INFINITE : $groups_per_user);
|
|
$course_id = api_get_course_int_id();
|
|
/*
|
|
* Retrieve all the groups where enrollment is still allowed
|
|
* (reverse) ordered by the number of place available
|
|
*/
|
|
$sql = "SELECT g.id gid, g.max_student - count(ug.user_id) nbPlaces, g.max_student
|
|
FROM ".$group_table." g
|
|
LEFT JOIN ".$group_user_table." ug
|
|
ON g.id = ug.group_id
|
|
WHERE g.c_id = $course_id AND
|
|
ug.c_id = $course_id AND
|
|
g.id IN (".implode(',', $group_ids).")
|
|
GROUP BY (g.id)
|
|
HAVING (nbPlaces > 0 OR g.max_student = ".self::MEMBER_PER_GROUP_NO_LIMIT.")
|
|
ORDER BY nbPlaces DESC";
|
|
|
|
$sql_result = Database::query($sql);
|
|
$group_available_place = array ();
|
|
while ($group = Database::fetch_array($sql_result, 'ASSOC')) {
|
|
$group_available_place[$group['gid']] = $group['nbPlaces'];
|
|
}
|
|
|
|
/*
|
|
* Retrieve course users (reverse) ordered by the number
|
|
* of group they are already enrolled
|
|
*/
|
|
for ($i = 0; $i < count($complete_user_list); $i ++) {
|
|
|
|
//find # of groups the user is enrolled in
|
|
$number_of_groups = self :: user_in_number_of_groups($complete_user_list[$i]["user_id"],$category['id']);
|
|
//add # of groups to user list
|
|
$complete_user_list[$i]['number_groups_left'] = $number_groups_per_user - $number_of_groups;
|
|
}
|
|
//first sort by user_id to filter out duplicates
|
|
$complete_user_list = TableSort :: sort_table($complete_user_list, 'user_id');
|
|
$complete_user_list = self :: filter_duplicates($complete_user_list, 'user_id');
|
|
//$complete_user_list = self :: filter_only_students($complete_user_list);
|
|
//now sort by # of group left
|
|
$complete_user_list = TableSort :: sort_table($complete_user_list, 'number_groups_left', SORT_DESC);
|
|
return $complete_user_list;
|
|
}
|
|
|
|
/**
|
|
* @param array $group_list
|
|
* @param int $category_id
|
|
*/
|
|
static function process_groups($group_list, $category_id = null)
|
|
{
|
|
global $origin, $charset;
|
|
$category_id = intval($category_id);
|
|
|
|
$totalRegistered = 0;
|
|
$group_data = array();
|
|
$user_info = api_get_user_info();
|
|
$session_id = api_get_session_id();
|
|
$user_id = $user_info['user_id'];
|
|
|
|
$orig = isset($origin) ? $origin : null;
|
|
|
|
foreach ($group_list as $this_group) {
|
|
|
|
// Validation when belongs to a session
|
|
$session_img = api_get_session_image($this_group['session_id'], $user_info['status']);
|
|
|
|
// All the tutors of this group
|
|
$tutorsids_of_group = self::get_subscribed_tutors($this_group['id'], true);
|
|
|
|
// Create a new table-row
|
|
$row = array();
|
|
|
|
// Checkbox
|
|
if (api_is_allowed_to_edit(false,true) && count($group_list) > 1) {
|
|
$row[] = $this_group['id'];
|
|
}
|
|
|
|
// Group name
|
|
if ((api_is_allowed_to_edit(false, true) ||
|
|
in_array($user_id, $tutorsids_of_group) ||
|
|
$this_group['is_member'] ||
|
|
self::user_has_access($user_id, $this_group['id'], self::GROUP_TOOL_FORUM) ||
|
|
self::user_has_access($user_id, $this_group['id'], self::GROUP_TOOL_DOCUMENTS) ||
|
|
self::user_has_access($user_id, $this_group['id'], self::GROUP_TOOL_CALENDAR) ||
|
|
self::user_has_access($user_id, $this_group['id'], self::GROUP_TOOL_ANNOUNCEMENT) ||
|
|
self::user_has_access($user_id, $this_group['id'], self::GROUP_TOOL_WORK) ||
|
|
self::user_has_access($user_id, $this_group['id'], self::GROUP_TOOL_WIKI))
|
|
&& !(api_is_course_coach() && intval($this_group['session_id']) != $session_id)
|
|
) {
|
|
|
|
$group_name = '<a href="group_space.php?cidReq='.api_get_course_id().'&origin='.$orig.'&gidReq='.$this_group['id'].'">'.
|
|
Security::remove_XSS($this_group['name']).'</a> ';
|
|
if (!empty($user_id) && !empty($this_group['id_tutor']) && $user_id == $this_group['id_tutor']) {
|
|
$group_name .= Display::label(get_lang('OneMyGroups'), 'success');
|
|
} elseif ($this_group['is_member']) {
|
|
$group_name .= Display::label(get_lang('MyGroup'), 'success');
|
|
}
|
|
|
|
if (api_is_allowed_to_edit() && !empty($this_group['session_name'])) {
|
|
$group_name .= ' ('.$this_group['session_name'].')';
|
|
}
|
|
$group_name .= $session_img;
|
|
$row[] = $group_name.'<br />'.stripslashes(trim($this_group['description']));
|
|
} else {
|
|
$row[] = $this_group['name'].'<br />'.stripslashes(trim($this_group['description']));
|
|
}
|
|
|
|
// Tutor name
|
|
$tutor_info = null;
|
|
|
|
if (count($tutorsids_of_group) > 0) {
|
|
foreach ($tutorsids_of_group as $tutor_id) {
|
|
$tutor = api_get_user_info($tutor_id);
|
|
$username = api_htmlentities(sprintf(get_lang('LoginX'), $tutor['username']), ENT_QUOTES);
|
|
if (api_get_setting('show_email_addresses') == 'true') {
|
|
$tutor_info .= Display::tag('span', Display::encrypted_mailto_link($tutor['mail'], api_get_person_name($tutor['firstName'], $tutor['lastName'])), array('title'=>$username)).', ';
|
|
} else {
|
|
if (api_is_allowed_to_edit()) {
|
|
$tutor_info .= Display::tag('span', Display::encrypted_mailto_link($tutor['mail'], api_get_person_name($tutor['firstName'], $tutor['lastName'])), array('title'=>$username)).', ';
|
|
} else {
|
|
$tutor_info .= Display::tag('span', api_get_person_name($tutor['firstName'], $tutor['lastName']), array('title'=>$username)).', ';
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
$tutor_info = api_substr($tutor_info, 0, api_strlen($tutor_info) - 2);
|
|
$row[] = $tutor_info;
|
|
|
|
// Max number of members in group
|
|
$max_members = ($this_group['maximum_number_of_members'] == self::MEMBER_PER_GROUP_NO_LIMIT ? ' ' : ' / '.$this_group['maximum_number_of_members']);
|
|
|
|
// Number of members in group
|
|
$row[] = $this_group['number_of_members'].$max_members;
|
|
|
|
// Self-registration / unregistration
|
|
if (!api_is_allowed_to_edit(false, true)) {
|
|
if (self :: is_self_registration_allowed($user_id, $this_group['id'])) {
|
|
$row[] = '<a class = "btn" href="group.php?'.api_get_cidreq().'&category='.$category_id.'&action=self_reg&group_id='.$this_group['id'].'" onclick="javascript:if(!confirm('."'".addslashes(api_htmlentities(get_lang('ConfirmYourChoice'), ENT_QUOTES, $charset))."'".')) return false;">'.get_lang('GroupSelfRegInf').'</a>';
|
|
} elseif (self :: is_self_unregistration_allowed($user_id, $this_group['id'])) {
|
|
$row[] = '<a class = "btn" href="group.php?'.api_get_cidreq().'&category='.$category_id.'&action=self_unreg&group_id='.$this_group['id'].'" onclick="javascript:if(!confirm('."'".addslashes(api_htmlentities(get_lang('ConfirmYourChoice'), ENT_QUOTES, $charset))."'".')) return false;">'.get_lang('GroupSelfUnRegInf').'</a>';
|
|
} else {
|
|
$row[] = '-';
|
|
}
|
|
}
|
|
$url = api_get_path(WEB_CODE_PATH).'group/';
|
|
// Edit-links
|
|
if (api_is_allowed_to_edit(false, true) && !(api_is_course_coach() && intval($this_group['session_id']) != $session_id)) {
|
|
$edit_actions = '<a href="'.$url.'settings.php?'.api_get_cidreq(true, false).'&gidReq='.$this_group['id'].'" title="'.get_lang('Edit').'">'.
|
|
Display::return_icon('edit.png', get_lang('EditGroup'),'',ICON_SIZE_SMALL).'</a> ';
|
|
$edit_actions .= '<a href="'.$url.'group_overview.php?action=export&type=xls&'.api_get_cidreq(true, false).'&id='.$this_group['id'].'" title="'.get_lang('ExportUsers').'">'.
|
|
Display::return_icon('export_excel.png', get_lang('ExportUsers'),'', ICON_SIZE_SMALL).'</a> ';
|
|
$edit_actions .= '<a href="'.api_get_self().'?'.api_get_cidreq(true, false).'&category='.$category_id.'&action=empty_one&id='.$this_group['id'].'" onclick="javascript: if(!confirm('."'".addslashes(api_htmlentities(get_lang('ConfirmYourChoice'), ENT_QUOTES))."'".')) return false;" title="'.get_lang('EmptyGroup').'">'.
|
|
Display::return_icon('clean.png',get_lang('EmptyGroup'),'',ICON_SIZE_SMALL).'</a> ';
|
|
$edit_actions .= '<a href="'.api_get_self().'?'.api_get_cidreq(true, false).'&category='.$category_id.'&action=fill_one&id='.$this_group['id'].'" onclick="javascript: if(!confirm('."'".addslashes(api_htmlentities(get_lang('ConfirmYourChoice'), ENT_QUOTES))."'".')) return false;" title="'.get_lang('FillGroup').'">'.
|
|
Display::return_icon('fill.png',get_lang('FillGroup'),'',ICON_SIZE_SMALL).'</a> ';
|
|
$edit_actions .= '<a href="'.api_get_self().'?'.api_get_cidreq(true, false).'&category='.$category_id.'&action=delete_one&id='.$this_group['id'].'" onclick="javascript: if(!confirm('."'".addslashes(api_htmlentities(get_lang('ConfirmYourChoice'), ENT_QUOTES))."'".')) return false;" title="'.get_lang('Delete').'">'.
|
|
Display::return_icon('delete.png', get_lang('Delete'),'',ICON_SIZE_SMALL).'</a> ';
|
|
$row[] = $edit_actions;
|
|
}
|
|
if (!empty($this_group['nbMember'])) {
|
|
$totalRegistered = $totalRegistered + $this_group['nbMember'];
|
|
}
|
|
$group_data[] = $row;
|
|
} // end loop
|
|
|
|
|
|
$table = new SortableTableFromArrayConfig($group_data, 1, 20, 'group_category_'.$category_id);
|
|
$table->set_additional_parameters(array('category' => $category_id));
|
|
$column = 0;
|
|
if (api_is_allowed_to_edit(false, true) and count($group_list) > 1) {
|
|
$table->set_header($column++, '', false);
|
|
}
|
|
$table->set_header($column++, get_lang('Groups'));
|
|
$table->set_header($column++, get_lang('GroupTutor'));
|
|
$table->set_header($column++, get_lang('Registered'), false);
|
|
|
|
if (!api_is_allowed_to_edit(false, true)) { // If self-registration allowed
|
|
$table->set_header($column++, get_lang('GroupSelfRegistration'), false);
|
|
}
|
|
if (api_is_allowed_to_edit(false, true)) { // Only for course administrator
|
|
$table->set_header($column++, get_lang('Modify'), false);
|
|
$form_actions = array();
|
|
$form_actions['fill_selected'] = get_lang('FillGroup');
|
|
$form_actions['empty_selected'] = get_lang('EmptyGroup');
|
|
$form_actions['delete_selected'] = get_lang('Delete');
|
|
if (count($group_list) > 1) {
|
|
$table->set_form_actions($form_actions, 'group');
|
|
}
|
|
}
|
|
$table->display();
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param array $groupData
|
|
* @param bool $deleteNotInArray
|
|
* @return array
|
|
*/
|
|
public static function importCategoriesAndGroupsFromArray($groupData, $deleteNotInArray = false)
|
|
{
|
|
$result = array();
|
|
$elementsFound = array(
|
|
'categories' => array(),
|
|
'groups' => array()
|
|
);
|
|
|
|
foreach ($groupData as $data) {
|
|
$isCategory = empty($data['group']) ? true : false;
|
|
|
|
if ($isCategory) {
|
|
$categoryInfo = self::getCategoryByTitle($data['category']);
|
|
$categoryId = $categoryInfo['id'];
|
|
if (!empty($categoryInfo)) {
|
|
// Update
|
|
self::update_category(
|
|
$categoryId,
|
|
$data['category'],
|
|
$data['description'],
|
|
$data['doc_state'],
|
|
$data['work_state'],
|
|
$data['calendar_state'],
|
|
$data['announcements_state'],
|
|
$data['forum_state'],
|
|
$data['wiki_state'],
|
|
$data['chat_state'],
|
|
$data['self_reg_allowed'],
|
|
$data['self_unreg_allowed'],
|
|
$data['max_student'],
|
|
$data['groups_per_user']
|
|
);
|
|
$data['category_id'] = $categoryId;
|
|
$result['updated']['category'][] = $data;
|
|
} else {
|
|
// Add
|
|
$categoryId = self::create_category(
|
|
$data['category'],
|
|
$data['description'],
|
|
$data['doc_state'],
|
|
$data['work_state'],
|
|
$data['calendar_state'],
|
|
$data['announcements_state'],
|
|
$data['forum_state'],
|
|
$data['wiki_state'],
|
|
$data['chat_state'],
|
|
$data['self_reg_allowed'],
|
|
$data['self_unreg_allowed'],
|
|
$data['max_student'],
|
|
$data['groups_per_user']
|
|
);
|
|
|
|
if ($categoryId) {
|
|
$data['category_id'] = $categoryId;
|
|
$result['added']['category'][] = $data;
|
|
}
|
|
}
|
|
$elementsFound['categories'][] = $categoryId;
|
|
} else {
|
|
|
|
$groupInfo = self::getGroupByName($data['group']);
|
|
|
|
if (empty($groupInfo)) {
|
|
$categoryInfo = self::getCategoryByTitle($data['category']);
|
|
$categoryId = null;
|
|
if (!empty($categoryInfo)) {
|
|
$categoryId = $categoryInfo['id'];
|
|
}
|
|
|
|
// Add
|
|
$groupId = self::create_group(
|
|
$data['group'],
|
|
$categoryId,
|
|
null,
|
|
$data['max_students']
|
|
);
|
|
|
|
if ($groupId) {
|
|
self::set_group_properties(
|
|
$groupId,
|
|
$data['group'],
|
|
$data['description'],
|
|
$data['max_students'],
|
|
$data['doc_state'],
|
|
$data['work_state'],
|
|
$data['calendar_state'],
|
|
$data['announcements_state'],
|
|
$data['forum_state'],
|
|
$data['wiki_state'],
|
|
$data['chat_state'],
|
|
$data['self_reg_allowed'],
|
|
$data['self_unreg_allowed']
|
|
);
|
|
$data['group_id'] = $groupId;
|
|
$result['added']['group'][] = $data;
|
|
}
|
|
} else {
|
|
// Update
|
|
$groupId = $groupInfo['id'];
|
|
self::set_group_properties(
|
|
$groupId,
|
|
$data['group'],
|
|
$data['description'],
|
|
$data['max_students'],
|
|
$data['doc_state'],
|
|
$data['work_state'],
|
|
$data['calendar_state'],
|
|
$data['announcements_state'],
|
|
$data['forum_state'],
|
|
$data['wiki_state'],
|
|
$data['chat_state'],
|
|
$data['self_reg_allowed'],
|
|
$data['self_unreg_allowed']
|
|
);
|
|
|
|
$data['group_id'] = $groupId;
|
|
$result['updated']['group'][] = $data;
|
|
}
|
|
$elementsFound['groups'][] = $groupId;
|
|
}
|
|
}
|
|
|
|
if ($deleteNotInArray) {
|
|
// Check categories
|
|
$categories = GroupManager::get_categories();
|
|
foreach ($categories as $category) {
|
|
if (!in_array($category['id'], $elementsFound['categories'])) {
|
|
GroupManager::delete_category($category['id']);
|
|
$category['category'] = $category['title'];
|
|
$result['deleted']['category'][] = $category;
|
|
}
|
|
}
|
|
|
|
$groups = GroupManager::get_groups();
|
|
foreach ($groups as $group) {
|
|
if (!in_array($group['id'], $elementsFound['groups'])) {
|
|
GroupManager::delete_groups(array($group['id']));
|
|
$group['group'] = $group['name'];
|
|
$result['deleted']['group'][] = $group;
|
|
}
|
|
}
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Export all categories/group from a course to an array.
|
|
* This function works only in a context of a course.
|
|
* @return array
|
|
*/
|
|
public static function exportCategoriesAndGroupsToArray()
|
|
{
|
|
$data = array();
|
|
$data[] = array(
|
|
'category',
|
|
'group',
|
|
'description',
|
|
'announcements_state',
|
|
'calendar_state',
|
|
'chat_state',
|
|
'doc_state',
|
|
'forum_state',
|
|
'work_state',
|
|
'wiki_state',
|
|
'max_student',
|
|
'self_reg_allowed',
|
|
'self_unreg_allowed',
|
|
'groups_per_user'
|
|
);
|
|
|
|
$categories = GroupManager::get_categories();
|
|
|
|
foreach ($categories as $categoryInfo) {
|
|
$data[] = array(
|
|
$categoryInfo['title'],
|
|
null,
|
|
$categoryInfo['description'],
|
|
$categoryInfo['announcements_state'],
|
|
$categoryInfo['calendar_state'],
|
|
$categoryInfo['chat_state'],
|
|
$categoryInfo['doc_state'],
|
|
$categoryInfo['forum_state'],
|
|
$categoryInfo['work_state'],
|
|
$categoryInfo['wiki_state'],
|
|
$categoryInfo['max_student'],
|
|
$categoryInfo['self_reg_allowed'],
|
|
$categoryInfo['self_unreg_allowed'],
|
|
$categoryInfo['groups_per_user']
|
|
);
|
|
}
|
|
|
|
$groups = GroupManager::get_group_list();
|
|
|
|
foreach ($groups as $groupInfo) {
|
|
$categoryTitle = null;
|
|
$categoryInfo = GroupManager::get_category($groupInfo['category_id']);
|
|
$groupSettings = GroupManager::get_group_properties($groupInfo['id']);
|
|
if (!empty($categoryInfo)) {
|
|
$categoryTitle = $categoryInfo['title'];
|
|
}
|
|
|
|
$data[] = array(
|
|
$categoryTitle,
|
|
$groupSettings['name'],
|
|
$groupSettings['description'],
|
|
$groupSettings['announcements_state'],
|
|
$groupSettings['calendar_state'],
|
|
$groupSettings['chat_state'],
|
|
$groupSettings['doc_state'],
|
|
$groupSettings['forum_state'],
|
|
$groupSettings['work_state'],
|
|
$groupSettings['wiki_state'],
|
|
$groupSettings['maximum_number_of_students'],
|
|
$groupSettings['self_registration_allowed'],
|
|
$groupSettings['self_unregistration_allowed'],
|
|
);
|
|
}
|
|
return $data;
|
|
}
|
|
|
|
static function getSettingBar($default)
|
|
{
|
|
$activeSettings = null;
|
|
$activeTutor = null;
|
|
$activeMember = null;
|
|
|
|
switch($default) {
|
|
case 'settings':
|
|
$activeSettings = 'active';
|
|
break;
|
|
case'tutor':
|
|
$activeTutor = 'active';
|
|
break;
|
|
case 'member':
|
|
$activeMember = 'active';
|
|
break;
|
|
}
|
|
|
|
$url = api_get_path(WEB_CODE_PATH).'group/%s?'.api_get_cidreq();
|
|
|
|
echo '
|
|
<ul class="nav nav-tabs">
|
|
<li class="'.$activeSettings.'">
|
|
<a href="'.sprintf($url, 'settings.php').'">
|
|
'.Display::return_icon('settings.png').' '.get_lang('Settings').'
|
|
</a>
|
|
</li>
|
|
<li class="'.$activeTutor.'">
|
|
<a href="'.sprintf($url, 'tutor_settings.php').'">
|
|
'.Display::return_icon('user.png').' '.get_lang('GroupTutors').'
|
|
</a>
|
|
</li>
|
|
<li class="'.$activeMember.'">
|
|
<a href="'.sprintf($url, 'member_settings.php').'">
|
|
'.Display::return_icon('teacher.png').' '.get_lang('GroupMembers').'
|
|
</a>
|
|
</li>
|
|
</ul>';
|
|
}
|
|
}
|
|
|