common\models\School::tableName PHP Method

    public static function tableName()
    {
        return '{{%school}}';
    }

 public function actionNameFilter($q = null, $id = null)
 {
     Yii::$app->response->format = Response::FORMAT_JSON;
     $output = ['results' => ['id' => '', 'text' => '']];
     if (!is_null($q)) {
         $sql = 'SELECT id, name AS text FROM ' . School::tableName() . ' WHERE name LIKE :like ORDER BY name ASC LIMIT 25';
         $output['results'] = Yii::$app->db->createCommand($sql, [':like' => "%{$q}%"])->queryAll();
     } elseif ($id > 0 && ($school = School::findOne($id))) {
         $output['results'] = ['id' => $id, 'text' => $school->name];
     }
     return $output;
 }