DTCloud附件上传

class LastFile(models.Model):
    _name = "last_file"
    _description = "最新文件"

    name = fields.Char("文件标题")
    udate_file = fields.Many2many('ir.attachment', string=u'上传附件')
    udate_file_dir = fields.Char(string="附件路径")
    demo_order_name = fields.Char(string="附件名称")
    url = fields.Char(string="本地下载")

     @api.onchange('udate_file')
     def _onchange_udate_file(self):
         if self.udate_file:
             # 循环文件对象集合
             for d in self.udate_file:
                 # 转换格式
                 content_base64 = base64.b64decode(d.datas)
                 # 当前工作目录路径
                 dir = os.getcwd()
                 time_str = str(time.time_ns())
                 # 拼接路径 + 文件名
                 path = dir + '/appstore/project/static/document/' + time_str + d.name
                 if not os.path.exists(path):
                     # 二进制文件写入
                     with open(path, mode='wb+') as ff:
                        ff.write(content_base64)
                     # 保存附件路径
                     for i in self:
                        i.udate_file_dir = path
                        i.demo_order_name = d.name
                         # URL保存地址，用于接口直接下载
                         i.url = '/project/static/document/' + time_str + d.name