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