/**
  * Updates an existing Video model.
  * If update is successful, the browser will be redirected to the 'view' page.
  * @param integer $id
  * @return mixed
  */
 public function actionUpdate($id)
 {
     $model = $this->findModel($id);
     $categoryModel = new VideoCategory();
     $treeParents = TreeHelper::build($categoryModel->find()->addOrderBy('tree')->addOrderBy('lft')->all());
     if ($model->load(Yii::$app->request->post()) && $model->save()) {
         return $this->redirect(['index']);
     } else {
         return $this->render('update', ['model' => $model, 'treeParents' => $treeParents]);
     }
 }
 /**
  * Creates data provider instance with search query applied
  *
  * @param array $params
  *
  * @return ActiveDataProvider
  */
 public function search($params)
 {
     $query = VideoCategory::find();
     $dataProvider = new ActiveDataProvider(['query' => $query]);
     $this->load($params);
     if (!$this->validate()) {
         // uncomment the following line if you do not want to return any records when validation fails
         // $query->where('0=1');
         return $dataProvider;
     }
     $query->andFilterWhere(['id' => $this->id, 'parent_id' => $this->parent_id, 'lft' => $this->lft, 'rgt' => $this->rgt, 'depth' => $this->depth, 'status' => $this->status, 'created_by' => $this->created_by, 'updated_by' => $this->updated_by, 'created_at' => $this->created_at, 'updated_at' => $this->updated_at]);
     $query->andFilterWhere(['like', 'title', $this->title])->andFilterWhere(['like', 'slug', $this->slug])->andFilterWhere(['like', 'image', $this->image])->andFilterWhere(['like', 'content', $this->content])->andFilterWhere(['like', 'meta_title', $this->meta_title])->andFilterWhere(['like', 'meta_keywords', $this->meta_keywords])->andFilterWhere(['like', 'meta_description', $this->meta_description]);
     return $dataProvider;
 }
 /**
  * Finds the VideoCategory model based on its primary key value.
  * If the model is not found, a 404 HTTP exception will be thrown.
  * @param integer $id
  * @return VideoCategory the loaded model
  * @throws NotFoundHttpException if the model cannot be found
  */
 protected function findModel($id)
 {
     if (($model = VideoCategory::findOne($id)) !== null) {
         return $model;
     } else {
         throw new NotFoundHttpException('The requested page does not exist.');
     }
 }