/**
  * Creates data provider instance with search query applied
  *
  * @param array $params
  *
  * @return ActiveDataProvider
  */
 public function search($params)
 {
     $query = ProviderIndustries::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, 'provider_id' => $this->provider_id, 'industry_id' => $this->industry_id, 'main' => $this->main]);
     // grid filtering conditions
     $query->orderBy(['main' => SORT_DESC]);
     return $dataProvider;
 }