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