protected function save_changes()
{
$description = DB::escape($this->post->description);
$cost = DB::escape($this->post->cost);
$exam_id = DB::escape($this->post->exam_id);
$active = DB::escape($this->post->active);
$current = DB::escape($this->post->current);
$passing = DB::escape($this->post->passing);
$reason = DB::escape($this->post->reason);
if ($current == 0 && $active == 1) {
$this->set('message', '<div id="error">You must add at least one question before activating an exam!</div><br />');
return;
} else {
ExamsData::add_exam_revision($exam_id, Auth::$userinfo->pilotid, $reason);
ExamsData::increase_exam_changed_date($exam_id);
ExamsData::increase_exam_version($exam_id);
ExamsData::edit_exam($active, $exam_id, $description, $passing, $cost);
$this->set('message', '<div id="success">Exam Changes Saved!</div><br />');
}
}
