public function actionPhotos($album_id)
 {
     $pageSize = 11;
     $photos = \app\modules\photo\models\Photos::find()->where('is_deleted=0 AND album_id=:album_id', [':album_id' => $album_id]);
     $provider = new \yii\data\ActiveDataProvider(['query' => $photos, 'pagination' => ['pageSize' => $pageSize]]);
     $totalCount = $provider->getTotalCount();
     $totalPageCount = (int) ($totalCount / $pageSize + 1);
     if ($totalPageCount < filter_input(INPUT_GET, 'page')) {
         exit;
     }
     $array = array();
     foreach ($provider->getModels() as $model) {
         $array[] = $model->attributes;
     }
     Yii::$app->response->format = 'json';
     return $array;
 }