public function search()
    {
        $query = static::find();
        if (Podium::getInstance()->user->isGuest) {
            $query->andWhere(['visible' => 1]);
        }
        $dataProvider = new ActiveDataProvider(['query' => $query]);
        $dataProvider->sort->defaultOrder = ['sort' => SORT_ASC, 'id' => SORT_ASC];
        return $dataProvider;
    }