public function getPhoto($photoId, $size = 'large')
    {
        $photo = Photo::findOrFail($photoId);

        switch ($size) {
            case 'large':
                return response()->download(storage_path().'/app/'.$photo->pathLarge);
            case 'small':
                return response()->download(storage_path().'/app/'.$photo->pathSmall);
        }

        abort(404);
    }