/**
  * Creates data provider instance with search query applied
  *
  * @param array $params
  *
  * @return ActiveDataProvider
  */
 public function search($params)
 {
     $query = UsersLevel::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, 'user_id' => $this->user_id, 'level_id' => $this->level_id, 'is_pay' => $this->is_pay, 'create_time' => $this->create_time, 'update_time' => $this->update_time]);
     $query->andFilterWhere(['like', 'certificate_number', $this->certificate_number])->andFilterWhere(['like', 'district', $this->district])->andFilterWhere(['like', 'receive_address', $this->receive_address])->andFilterWhere(['like', 'postcode', $this->postcode])->andFilterWhere(['like', 'update_user', $this->update_user]);
     $query->orderBy(' id desc ');
     return $dataProvider;
 }