def get_photo_thumbnail_url(self):
        if getattr(self, 'photo'): # Если не пустое значение.
            dir, file = os.path.split(getattr(self, 'photo'))
            file_name, ext = os.path.splitext(file)
            new_file_name = file_name + u'_thumbnail' + ext
            path = os.path.join(dir, new_file_name)
            return urlparse.urljoin(settings.MEDIA_URL, path).replace('\\', '/')
        return ''