/**
  * Creates data provider instance with search query applied
  *
  * @param array $params
  *
  * @return ActiveDataProvider
  */
 public function search($params)
 {
     $query = AuditTrail::find();
     $dataProvider = new ActiveDataProvider(['query' => $query]);
     if (!($this->load($params) && $this->validate())) {
         return $dataProvider;
     }
     $query->andFilterWhere(['id' => $this->id, 'stamp' => $this->stamp]);
     $query->andFilterWhere(['like', 'old_value', $this->old_value])->andFilterWhere(['like', 'new_value', $this->new_value])->andFilterWhere(['like', 'action', $this->action])->andFilterWhere(['like', 'model', $this->model])->andFilterWhere(['like', 'field', $this->field])->andFilterWhere(['like', 'user_id', $this->user_id])->andFilterWhere(['like', 'model_id', $this->model_id]);
     return $dataProvider;
 }