Django rest framework 如何在django rest中获取请求用户数据到表示函数

我需要访问

request.user

在

to_representation

函数中，我尝试了

self.context['request']

但是

self.context

是空字典。是否有任何方式可以访问

request.user

或将此数据推送到此函数

def to_representation(self, obj):
    print(self.context)

#output is an empty dictionary {}

更新

class RetrieveView(generics.RetrieveAPIView):
    def get(self, request, *args, **kwargs):
        uid = kwargs.get('uid')
        try:
            item = self.model.nodes.get(uid=uid)
        except Exception as e:
            # error response
        serializer = self.serializer_class(item)
        return HttpSuccessResponse(SuccessResponse(serializer.data).to_json(), status=status.HTTP_200_OK).send()


class TopicRetrieveView(single_result.RetrieveView):
    model = Topic
    serializer_class = topic.TopicSerializer

---

所有代码均来自django rest框架通用视图

serializer\u class

是我们在类定义中设置的属性，或者我们需要重写

get\u serializer\u class

函数。它将在此函数中处理：

def get_serializer_class(self):
    """
    Return the class to use for the serializer.
    Defaults to using `self.serializer_class`.

    You may want to override this if you need to provide different
    serializations depending on the incoming request.

    (Eg. admins get full serialization, others get basic serialization)
    """
    assert self.serializer_class is not None, (
        "'%s' should either include a `serializer_class` attribute, "
        "or override the `get_serializer_class()` method."
        % self.__class__.__name__
    )

    return self.serializer_class

def get_serializer(self, *args, **kwargs):
    """
    Return the serializer instance that should be used for validating and
    deserializing input, and for serializing output.
    """
    serializer_class = self.get_serializer_class()
    kwargs['context'] = self.get_serializer_context()
    return serializer_class(*args, **kwargs)

get\u serializer\u类

将用于

get\u serializer

函数：

def get_serializer_class(self):
    """
    Return the class to use for the serializer.
    Defaults to using `self.serializer_class`.

    You may want to override this if you need to provide different
    serializations depending on the incoming request.

    (Eg. admins get full serialization, others get basic serialization)
    """
    assert self.serializer_class is not None, (
        "'%s' should either include a `serializer_class` attribute, "
        "or override the `get_serializer_class()` method."
        % self.__class__.__name__
    )

    return self.serializer_class

def get_serializer(self, *args, **kwargs):
    """
    Return the serializer instance that should be used for validating and
    deserializing input, and for serializing output.
    """
    serializer_class = self.get_serializer_class()
    kwargs['context'] = self.get_serializer_context()
    return serializer_class(*args, **kwargs)

而

context

将由

get\u serializer\u context

函数填充

def get_serializer_context(self):
    """
    Extra context provided to the serializer class.
    """
    return {
        'request': self.request,
        'format': self.format_kwarg,
        'view': self
    }

---

所以正确的用法是

serializer=self.get\u serializer（item）

，因为它将使用

serializer\u class

对item进行序列化，并使用可能有用的额外信息填充

上下文
serializer=self.serializer\u类（item）
可用于仅序列化项，而无需更多额外信息
 可以在使用序列化程序的位置添加视图实现吗？如果使用rest框架的某个视图，则应该正确设置上下文。所以我猜问题就出在这方面了。@fantairmartin这个更新好吗？多亏了@fantairmartin，我发现了我的错误，我需要使用self.get\u serializer（）在self.serializer\u classYes中，我刚刚写了一个关于这个的回复。玩得高兴