/**
* Deletes an assignment activity
*
* Deletes all database records, files and calendar events for this assignment.
*
* @global object
* @global object
* @param object $assignment The assignment to be deleted
* @return boolean False indicates error
*/
function delete_instance($assignment) {
global $CFG, $DB;
$assignment->courseid = $assignment->course;
$result = true;
// now get rid of all files
$fs = get_file_storage();
if ($cm = get_coursemodule_from_instance('assignment', $assignment->id)) {
$context = get_context_instance(CONTEXT_MODULE, $cm->id);
$fs->delete_area_files($context->id);
}
if (! $DB->delete_records('assignment_submissions', array('assignment'=>$assignment->id))) {
$result = false;
}
if (! $DB->delete_records('event', array('modulename'=>'assignment', 'instance'=>$assignment->id))) {
$result = false;
}
if (! $DB->delete_records('assignment', array('id'=>$assignment->id))) {
$result = false;
}
$mod = $DB->get_field('modules','id',array('name'=>'assignment'));
assignment_grade_item_delete($assignment);
return $result;
}
/**
* Deletes an assignment activity
*
* Deletes all database records, files and calendar events for this assignment.
* @param $assignment object The assignment to be deleted
* @return boolean False indicates error
*/
function delete_instance($assignment)
{
global $CFG;
$assignment->courseid = $assignment->course;
$result = true;
if (!delete_records('assignment_submissions', 'assignment', $assignment->id)) {
$result = false;
}
if (!delete_records('assignment', 'id', $assignment->id)) {
$result = false;
}
if (!delete_records('event', 'modulename', 'assignment', 'instance', $assignment->id)) {
$result = false;
}
// delete file area with all attachments - ignore errors
require_once $CFG->libdir . '/filelib.php';
fulldelete($CFG->dataroot . '/' . $assignment->course . '/' . $CFG->moddata . '/assignment/' . $assignment->id);
assignment_grade_item_delete($assignment);
return $result;
}
