/**
* Deletes a program assignment activity
*
* Deletes all database records, files and calendar events for this assignment.
*
* @param object $assignment The assignment to be deleted
* @return boolean False indicates error
*/
function delete_instance($assignment)
{
global $CFG;
// DELETE submissions results
$submissions = get_records('assignment_submissions', 'assignment', $assignment->id);
foreach ($submissions as $submission) {
if (!delete_records('assignment_oj_results', 'submission', $submission->id)) {
return false;
}
if (!delete_records('assignment_oj_submissions', 'submission', $submission->id)) {
return false;
}
}
// DELETE tests
if (!delete_records('assignment_oj_tests', 'assignment', $assignment->id)) {
return false;
}
// DELETE programming language
if (!delete_records('assignment_oj', 'assignment', $assignment->id)) {
return false;
}
$result = parent::delete_instance($assignment);
return $result;
}
