protected function findModel($id)
 {
     if (($model = ApplicationConfig::findOne($id)) !== null) {
         return $model;
     } else {
         throw new NotFoundHttpException('The requested page does not exist.');
     }
 }
 /**
  * Creates data provider instance with search query applied
  *
  * @param array $params
  *
  * @return ActiveDataProvider
  */
 public function search($params)
 {
     $query = ApplicationConfig::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, 'visitors_count' => $this->visitors_count]);
     $query->andFilterWhere(['like', 'slider_img1', $this->slider_img1])->andFilterWhere(['like', 'slider_img2', $this->slider_img2])->andFilterWhere(['like', 'slider_img3', $this->slider_img3]);
     return $dataProvider;
 }
 public function actionIndex()
 {
     $visitor = ApplicationConfig::findOne(1);
     return $this->render('index', ['visitor' => $visitor]);
 }