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