public function actionCategory($categoryId)
 {
     $category = ProductCategory::findOne($categoryId);
     if (empty($category)) {
         throw new NotFoundHttpException('The requested page does not exist.');
     }
     if ($this->isAjax()) {
         $model = new Recipe();
         $model->productCategoryId = $categoryId;
         return $this->renderPartial('@app/views/partials/_category-ingredients-dropdown-list', ['model' => $model, 'form' => ActiveForm::begin()]);
     } else {
         $params = Yii::$app->request->queryParams;
         $params['categoryId'] = $categoryId;
         $searchModel = new ProductRepository();
         $dataProvider = $searchModel->search($params);
         return $this->render(['searchModel' => $searchModel, 'dataProvider' => $dataProvider, 'categoryName' => $category->name]);
     }
 }