【django基础】 admin列表添加下载文件按钮

class order(models.Model):
    """
    订单表
    """
    title = models.ForeignKey(to="task",verbose_name=任务标题")
    publisher = models.ForeignKey(to=UserInfo'publisher_id',1)">发布者)
    money = models.IntegerField(verbose_name=悬赏虚拟币)
    receiver = models.ForeignKey(to=receiver_id接单者)
    check_status = models.BooleanField(verbose_name=审核状态0)
    status = models.BooleanField(verbose_name=完成状态0)
    name = models.CharField(max_length=255,1)">文件名True)
    file_path = models.CharField(max_length=255,1)">文件存放路径True)
    create_time = models.DateTimeField(auto_Now=True,1)">创建时间)

    def __str__(self):
        return self.title

    def download(self):
        path = self.file_path

        button_html = "<a  href='{}'>下载文件</a>".format(path)

        return format_html(button_html)

    download.short_description = format_html("""<a  href='#' style="position: relative;left: -12px;">下载文件</a>""")

     Meta:
        verbose_name = 订单表
        verbose_name_plural = verbose_name
        db_table = order'