/**
* Given an ID of an instance of this module,
* this function will permanently delete the instance
* and any data that depends on it.
*
* @param int $id Id of the module instance
* @return boolean Success/Failure
*/
function checklist_delete_instance($id)
{
global $DB;
if (!($checklist = $DB->get_record('checklist', array('id' => $id)))) {
return false;
}
// Remove all calendar events
if ($checklist->duedatesoncalendar) {
$checklist->duedatesoncalendar = false;
$course = $DB->get_record('course', array('id' => $checklist->course));
$cm = get_coursemodule_from_instance('checklist', $checklist->id, $course->id);
if ($cm) {
// Should not be false, but check, just in case...
$chk = new checklist_class($cm->id, 0, $checklist, $cm, $course);
$chk->setallevents();
}
}
$result = true;
$items = $DB->get_records('checklist_item', array('checklist' => $checklist->id), '', 'id');
if (!empty($items)) {
$items = array_keys($items);
$result = $DB->delete_records_list('checklist_check', 'item', $items);
$result = $DB->delete_records_list('checklist_comment', 'itemid', $items);
$result = $result && $DB->delete_records('checklist_item', array('checklist' => $checklist->id));
}
$result = $result && $DB->delete_records('checklist', array('id' => $checklist->id));
checklist_grade_item_delete($checklist);
return $result;
}
/**
* Given an ID of an instance of this module,
* this function will permanently delete the instance
* and any data that depends on it.
*
* @param int $id Id of the module instance
* @return boolean Success/Failure
*/
function checklist_delete_instance($id)
{
if (!($checklist = get_record('checklist', 'id', $id))) {
return false;
}
// Remove all calendar events
if ($checklist->duedatesoncalendar) {
$checklist->duedatesoncalendar = false;
$course = get_record('course', 'id', $checklist->course);
$cm = get_coursemodule_from_instance('checklist', $checklist->id, $course->id);
if ($cm) {
// Should not fail be false, but check, just in case...
$chk = new checklist_class($cm->id, 0, $checklist, $cm, $course);
$chk->setallevents();
}
}
$result = true;
$items = get_records('checklist_item', 'checklist', $checklist->id, '', 'id');
if ($items) {
$items = implode(',', array_keys($items));
$result = delete_records_select('checklist_check', 'item IN (' . $items . ')');
$result = $result && delete_records_select('checklist_comment', 'item IN (' . $items . ')');
if ($result) {
$result = delete_records('checklist_item', 'checklist', $checklist->id);
}
}
if ($result && !delete_records('checklist', 'id', $checklist->id)) {
$result = false;
}
checklist_grade_item_delete($checklist);
return $result;
}
