Why doesn't the search in the controller, Yii2?

public $search_file; public function rules() { return [ [['search_file'], 'trim'], ['search_file', 'string', 'max' => 191] ]; } /** * {@inheritdoc} */ public function scenarios() { // bypass scenarios() implementation in the parent class return Model::scenarios(); } /** * Creates data provider instance with search query applied * * @param array $params * * @return ActiveDataProvider */ public function search($params) { $query = File::find(); // add conditions that should always apply here $dataProvider = new ActiveDataProvider([ 'query' => $query, 'pagination' => [ 'pageSize' => 10, ], 'sort' => [ 'defaultOrder' => [ 'created' => SORT_DESC, ] ], ]); $this->load($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(['like', 'name_file', $this->search_file]); // ->andFilterWhere(['like', 'type', $this->search_file]); the field return $dataProvider; }