/** * Finds the Payment model based on its primary key value. * If the model is not found, a 404 HTTP exception will be thrown. * @param integer $payment_id * @return Payment the loaded model * @throws HttpException if the model cannot be found */ protected function findModel($payment_id) { if (($model = Payment::findOne($payment_id)) !== null) { return $model; } else { throw new HttpException(404, 'The requested page does not exist.'); } }