Django-tastypie 将 request.user 传递给自定义保存方法 [英] Django-tastypie pass request.user to custom save method

问题描述

由于我的模型的自定义保存方法将 request.user 作为参数，因此我无法执行 POST/PUT 请求.

Since my model's custom save method takes request.user as an argument I'm unable to do POST/PUT requests.

TypeError at /api/obsadmin/observation/23
save() takes at least 2 arguments (1 given)

我正在使用 SessionAuthentication() 并包含 CSRF 令牌.

I'm using SessionAuthentication() and have included the CSRF token.

这是相关的模型部分:

def save(self, user, owner=None, *args, **kwargs):
    self.updated_by = user.id
    super(ObsModel, self).save(*args, **kwargs)

和资源:

class ObservationResource2(ModelResource):

comments = fields.ToManyField(CommentResource2, 'comments', full=True, null=True)

class Meta:
    queryset = Observation.objects.filter(is_verified=True)
    authentication = SessionAuthentication()
    authorization = DjangoAuthorization()
    resource_name = 'observation'
    always_return_data = True

推荐答案

您可以覆盖 ModelResource 子类上的默认 save() 方法.查看默认实现显示 save() 是用一个包对象调用的，该对象同时包含请求和要保存的对象.

You could override the default save() method on your ModelResource subclass. Looking at the default implementation shows that save() is called with a bundle object which has both the request and the object to be saved.

不幸的是，在不复制大部分代码的情况下没有简单的方法来更改它，因为更改 Django 模型的 save() 签名相当不常见.您也许可以执行这样的操作，但我建议您仔细测试一下:

Unfortunately, there's no easy way to change this without copying most of that code because changing a Django model's save() signature is fairly uncommon. You might be able to do something like this, although I'd recommend testing it carefully:

from functools import partial

try:
    old_save = bundle.obj.save
    bundle.obj.save = partial(old_save, user=bundle.request.user)
    return super(FooResource, self).save(bundle)
finally:
    bundle.obj.save = old_save

参考文献:

• obj_create:文档 source
• obj_update:文档 source
• 保存:源

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