public function actionIndex($category_id = null)
 {
     $searchModel = new Category();
     $searchModel->active = 1;
     $params = Yii::$app->request->get();
     $dataProvider = $searchModel->search($params);
     $selectedCategory = null;
     if ($category_id !== null) {
         $selectedCategory = Category::findById($category_id);
     }
     if ($selectedCategory !== null) {
         if (Yii::$app->request->isPost === true) {
             $newProperty = isset($_GET['add_property_id']) ? Property::findById($_GET['add_property_id']) : null;
             if ($newProperty !== null) {
                 $filterSet = new FilterSets();
                 $filterSet->category_id = $selectedCategory->id;
                 $filterSet->property_id = $newProperty->id;
                 $filterSet->sort_order = 65535;
                 $filterSet->save();
             }
         }
     }
     $groups = PropertyGroup::getForObjectId(Object::getForClass(Product::className())->id, false);
     $propertiesDropdownItems = [];
     foreach ($groups as $group) {
         $item = ['label' => $group->name, 'url' => '#', 'items' => []];
         $properties = Property::getForGroupId($group->id);
         foreach ($properties as $prop) {
             $item['items'][] = ['label' => $prop->name, 'url' => '?category_id=' . $category_id . '&add_property_id=' . $prop->id, 'linkOptions' => ['class' => 'add-property-to-filter-set', 'data-property-id' => $prop->id, 'data-action' => 'post']];
         }
         $propertiesDropdownItems[] = $item;
     }
     return $this->render('index', ['dataProvider' => $dataProvider, 'searchModel' => $searchModel, 'selectedCategory' => $selectedCategory, 'propertiesDropdownItems' => $propertiesDropdownItems]);
 }
 public function actionIndex($parent_id = 0)
 {
     $searchModel = new Category();
     $searchModel->parent_id = $parent_id;
     $params = Yii::$app->request->get();
     $dataProvider = $searchModel->search($params);
     $model = null;
     if ($parent_id > 0) {
         $model = Category::findOne($parent_id);
     }
     return $this->render('index', ['dataProvider' => $dataProvider, 'searchModel' => $searchModel, 'model' => $model]);
 }