public function add_comments($type, $type_no, $date_, $memo_)
{
if ($memo_ != null && $memo_ != "") {
$comment = new PahComments();
$comment->type = $type;
$comment->type_no = $type_no;
$comment->date_ = $date_;
$comment->memo_ = $memo_;
if (!$comment->save()) {
throw new Exception("Gagal menyimpan keterangan.");
}
}
}
