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lcqtdwj
V2EX  ›  Python

求助,django,post_delete,partial

  •  
  •   lcqtdwj ·
    jiffies · Nov 20, 2014 · 4475 views
    This topic created in 4198 days ago, the information mentioned may be changed or developed.
    上传的图片再删除对象后,django不会自动删除在media_root下的实际文件,所以用 post_delete.connect(delete_file,sender=ModelA) 但是我有2个模型都有imageField,并且他们的属性名不一样,所以我希望delete_file函数是通用的,接受一个指定属性名的参数,这样我就可以.

    from functools import partial post_delete.connect(partial(delete_file,'attr_name_A'),sender=ModelA) post_delete.connect(partial(delete_file,'attr_name_B'),sender=ModelB)

    def delete_file(attrname,sender,**kwargs): instance=kwargs['instance'] os.remove(os.path.join(BASE_DIR,instance.getattr[attrname].path))

    但是没有成功,没报任何异常错误,delete_file没有执行。请问哪里有问题么?或者应该怎样调试?
    2 replies    2014-11-20 12:57:06 +08:00
    lcqtdwj
        2
    lcqtdwj  
    OP
       Nov 20, 2014
    @Archangel_SDY 感谢,就是这个问题,解决了
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