models.py 文件源码

def thumbnail_image_tag(self):
        if not self.thumbnail:
            return format_html('<span>No image to preview</span>')

        media_url = settings.MEDIA_URL

        if settings.USE_S3:
            media_url = 'https://{domain}/{bucket}/'.format(
                domain=settings.AWS_S3_CUSTOM_DOMAIN,
                bucket=settings.AWS_LOCATION
            )

        html = '<img src="{media_url}{src}" style="width:25%">'.format(
            media_url=media_url,
            src=self.thumbnail
        )

        return format_html(html)