public function actionView($type, $alias)
 {
     $item = Article::find()->type($type)->alias($alias)->one();
     if (!$item) {
         throw new HttpException(404, 'Статья не найдена');
     }
     return $this->render('view', ['item' => $item, 'type' => $type]);
 }
 /**
  * Creates data provider instance with search query applied
  *
  * @param array $params
  *
  * @return ActiveDataProvider
  */
 public function search($params)
 {
     $query = Article::find();
     $dataProvider = new ActiveDataProvider(['query' => $query]);
     $this->load($params);
     if (!$this->validate()) {
         // uncomment the following line if you do not want to any records when validation fails
         // $query->where('0=1');
         return $dataProvider;
     }
     $query->andFilterWhere(['id' => $this->id, 'type' => $this->type, 'visible' => $this->visible, 'dateCreate' => $this->dateCreate]);
     $query->andFilterWhere(['like', 'title', $this->title])->andFilterWhere(['like', 'description', $this->description])->andFilterWhere(['like', 'alias', $this->alias]);
     return $dataProvider;
 }