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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Event observers supported by this module
*
* @package mod_attendance
* @copyright 2017 Dan Marsden
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
/**
* Event observers supported by this module
*
* @package mod_attendance
* @copyright 2017 Dan Marsden
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class mod_attendance_observer {
/**
* Observer for the event course_content_deleted - delete all attendance stuff.
*
* @param \core\event\course_content_deleted $event
*/
public static function course_content_deleted(\core\event\course_content_deleted $event) {
global $DB;
$attids = array_keys($DB->get_records('attendance', array('course' => $event->objectid), '', 'id'));
$sessids = array_keys($DB->get_records_list('attendance_sessions', 'attendanceid', $attids, '', 'id'));
if (attendance_existing_calendar_events_ids($sessids)) {
attendance_delete_calendar_events($sessids);
}
if ($sessids) {
$DB->delete_records_list('attendance_log', 'sessionid', $sessids);
}
if ($attids) {
$DB->delete_records_list('attendance_statuses', 'attendanceid', $attids);
$DB->delete_records_list('attendance_sessions', 'attendanceid', $attids);
}
}
}