/**
  * Creates data provider instance with search query applied
  *
  * @param array $params
  *
  * @return ActiveDataProvider
  */
 public function search($params)
 {
     $id = ArrayHelper::getValue($params, 'id');
     if ($id > 0) {
         $query = DtDefsheetDevices::find()->Where(['dt_defsheets_id' => $id]);
     } else {
         $query = DtDefsheetDevices::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(['dt_defsheets_id' => $this->dt_defsheets_id, 'devices_id' => $this->devices_id, 'status' => $this->status]);
     $query->andFilterWhere(['like', 'reason', $this->reason]);
     return $dataProvider;
 }