Inheritance: extends Illuminate\Database\Eloquent\Model, use trait Illuminate\Database\Eloquent\SoftDeletes
 /**
  * 上传并存储照片
  *
  * @param       $albumId
  * @param array $photo
  * @return array
  */
 public function storePhoto($albumId, array $photo = [])
 {
     if (!$albumId || !$photo) {
         return [];
     }
     $photoModel = new AlbumPhoto();
     $photoModel->origin_name = $photo['origin_name'];
     $photoModel->path = $photo['image_path'];
     $photoModel->album_id = $albumId;
     $photoModel->user_id = Auth::id();
     $ret = $photoModel->save();
     return $ret ? $photo : [];
 }