/** * Delete a user from the platform, and all its belongings. This is a * very dangerous function that should only be accessible by * super-admins. Other roles should only be able to disable a user, * which removes access to the platform but doesn't delete anything. * @param int The ID of th user to be deleted * @return boolean true if user is successfully deleted, false otherwise * @assert (null) === false * @assert ('abc') === false */ public static function delete_user($user_id) { if ($user_id != strval(intval($user_id))) { return false; } if ($user_id === false) { return false; } if (!self::can_delete_user($user_id)) { return false; } $table_user = Database::get_main_table(TABLE_MAIN_USER); $usergroup_rel_user = Database::get_main_table(TABLE_USERGROUP_REL_USER); $table_course_user = Database::get_main_table(TABLE_MAIN_COURSE_USER); $table_course = Database::get_main_table(TABLE_MAIN_COURSE); $table_session = Database::get_main_table(TABLE_MAIN_SESSION); $table_admin = Database::get_main_table(TABLE_MAIN_ADMIN); $table_session_user = Database::get_main_table(TABLE_MAIN_SESSION_USER); $table_session_course_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER); $table_group = Database::get_course_table(TABLE_GROUP_USER); $table_work = Database::get_course_table(TABLE_STUDENT_PUBLICATION); // Unsubscribe the user from all groups in all his courses $sql = "SELECT c.id FROM {$table_course} c, {$table_course_user} cu\n WHERE\n cu.user_id = '" . $user_id . "' AND\n relation_type<>" . COURSE_RELATION_TYPE_RRHH . " AND\n c.id = cu.c_id"; $res = Database::query($sql); while ($course = Database::fetch_object($res)) { $sql = "DELETE FROM {$table_group}\n WHERE c_id = {$course->id} AND user_id = {$user_id}"; Database::query($sql); } // Unsubscribe user from usergroup_rel_user $sql = "DELETE FROM {$usergroup_rel_user} WHERE user_id = '" . $user_id . "'"; Database::query($sql); // Unsubscribe user from all courses $sql = "DELETE FROM {$table_course_user} WHERE user_id = '" . $user_id . "'"; Database::query($sql); // Unsubscribe user from all courses in sessions $sql = "DELETE FROM {$table_session_course_user} WHERE user_id = '" . $user_id . "'"; Database::query($sql); // If the user was added as a id_coach then set the current admin as coach see BT# $currentUserId = api_get_user_id(); $sql = "UPDATE {$table_session} SET id_coach = {$currentUserId}\n WHERE id_coach = '" . $user_id . "'"; Database::query($sql); $sql = "UPDATE {$table_session} SET id_coach = {$currentUserId}\n WHERE session_admin_id = '" . $user_id . "'"; Database::query($sql); // Unsubscribe user from all sessions $sql = "DELETE FROM {$table_session_user}\n WHERE user_id = '" . $user_id . "'"; Database::query($sql); // Delete user picture /* TODO: Logic about api_get_setting('split_users_upload_directory') == 'true' a user has 4 different sized photos to be deleted. */ $user_info = api_get_user_info($user_id); if (strlen($user_info['picture_uri']) > 0) { $path = self::getUserPathById($user_id, 'system'); $img_path = $path . $user_info['picture_uri']; if (file_exists($img_path)) { unlink($img_path); } } // Delete the personal course categories $course_cat_table = Database::get_main_table(TABLE_USER_COURSE_CATEGORY); $sql = "DELETE FROM {$course_cat_table} WHERE user_id = '" . $user_id . "'"; Database::query($sql); // Delete user from the admin table $sql = "DELETE FROM {$table_admin} WHERE user_id = '" . $user_id . "'"; Database::query($sql); // Delete the personal agenda-items from this user $agenda_table = Database::get_main_table(TABLE_PERSONAL_AGENDA); $sql = "DELETE FROM {$agenda_table} WHERE user = '******'"; Database::query($sql); $gradebook_results_table = Database::get_main_table(TABLE_MAIN_GRADEBOOK_RESULT); $sql = 'DELETE FROM ' . $gradebook_results_table . ' WHERE user_id = ' . $user_id; Database::query($sql); $extraFieldValue = new ExtraFieldValue('user'); $extraFieldValue->deleteValuesByItem($user_id); UrlManager::deleteUserFromAllUrls($user_id); if (api_get_setting('social.allow_social_tool') == 'true') { $userGroup = new UserGroup(); //Delete user from portal groups $group_list = $userGroup->get_groups_by_user($user_id); if (!empty($group_list)) { foreach ($group_list as $group_id => $data) { $userGroup->delete_user_rel_group($user_id, $group_id); } } // Delete user from friend lists SocialManager::remove_user_rel_user($user_id, true); } // Removing survey invitation SurveyManager::delete_all_survey_invitations_by_user($user_id); // Delete students works $sql = "DELETE FROM {$table_work} WHERE user_id = {$user_id} AND c_id <> 0"; Database::query($sql); $sql = "UPDATE c_item_property SET to_user_id = NULL\n WHERE to_user_id = '" . $user_id . "'"; Database::query($sql); $sql = "UPDATE c_item_property SET insert_user_id = NULL\n WHERE insert_user_id = '" . $user_id . "'"; Database::query($sql); $sql = "UPDATE c_item_property SET lastedit_user_id = NULL\n WHERE lastedit_user_id = '" . $user_id . "'"; Database::query($sql); // Delete user from database $sql = "DELETE FROM {$table_user} WHERE id = '" . $user_id . "'"; Database::query($sql); // Add event to system log $user_id_manager = api_get_user_id(); Event::addEvent(LOG_USER_DELETE, LOG_USER_ID, $user_id, api_get_utc_datetime(), $user_id_manager); Event::addEvent(LOG_USER_DELETE, LOG_USER_OBJECT, $user_info, api_get_utc_datetime(), $user_id_manager); return true; }