public function search($params) { $query = SpecialistHasType::find(); $dataProvider = new ActiveDataProvider(['query' => $query]); if (!($this->load($params) && $this->validate())) { return $dataProvider; } $query->andFilterWhere(['spec_id' => $this->spec_id, 'spec_type_id' => $this->spec_type_id]); return $dataProvider; }