public function actionIndex()
 {
     $filter = $_GET;
     $page = Yii::$app->request->get('page');
     if (!$page) {
         return $this->redirect('/admin/photo?page=1');
     }
     $sortBy = Yii::$app->request->get('sort');
     if (!$sortBy) {
         $sortBy = 'photo_id';
     }
     $count = AdminPhoto::getCount();
     $pages = new CustomPagination(['limit' => 10, 'page' => $page, 'count' => $count]);
     $photos = AdminPhoto::getListPhoto($pages->offset, $pages->limit, $sortBy, $filter);
     return $this->render('index', ['filter' => $filter, 'sortBy' => $sortBy, 'photos' => $photos, 'pages' => $pages]);
 }