if (!empty($field) || '' != $field) {
            $uploader = new \XoopsMediaUploader($img_dir, $allowed_mimetypes, $max_imgsize, $max_imgwidth, $max_imgheight);
            $uploader->setPrefix('img');
            if ($uploader->fetchMedia($field) && $uploader->upload()) {
                $photo = $uploader->getSavedFileName();