/**
  * Creates data provider instance with search query applied
  *
  * @param array $params
  *
  * @return ActiveDataProvider
  */
 public function search($params)
 {
     $query = Notification::find();
     // add conditions that should always apply here
     $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;
     }
     // grid filtering conditions
     $query->andFilterWhere(['id' => $this->id, 'code_id' => $this->code_id, 'user_from_id' => $this->user_from_id, 'type' => $this->type]);
     $query->andFilterWhere(['like', 'name', $this->name])->andFilterWhere(['like', 'user_to_id', $this->user_to_id])->andFilterWhere(['like', 'auth_key', $this->auth_key])->andFilterWhere(['like', 'subject', $this->subject])->andFilterWhere(['like', 'text', $this->text])->andFilterWhere(['like', 'created_at', $this->created_at])->andFilterWhere(['like', 'updated_at', $this->updated_at]);
     return $dataProvider;
 }
 /**
  * Finds the Notification model based on its primary key value.
  * If the model is not found, a 404 HTTP exception will be thrown.
  * @param integer $id
  * @return Notification the loaded model
  * @throws NotFoundHttpException if the model cannot be found
  */
 protected function findModel($id)
 {
     if (($model = Notification::findOne($id)) !== null) {
         return $model;
     } else {
         throw new NotFoundHttpException('The requested page does not exist.');
     }
 }