Python 使用 Django Rest Framework 返回当前用户
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Return the current user with Django Rest Framework
提问by Maxime
I am currently developing an API using Django.
我目前正在使用 Django 开发 API。
However, I would like to create a view that returns the current User with the following endpoint: /users/current/.
但是，我想创建一个视图，该视图返回具有以下端点的当前用户：/users/current/.
To do so, I created a list view and filtered the queryset on the user that made the request. That works, but the result is a list, not a single object. Combined with pagination, the result looks way too complicated and inconsistent compared to other endpoints.
为此，我创建了一个列表视图并过滤了发出请求的用户的查询集。这有效，但结果是一个列表，而不是单个对象。结合分页，与其他端点相比，结果看起来过于复杂和不一致。
I also tried to create a detail view and filtering the queryset, but DRF complains that I provided no pk or slug.
我还尝试创建详细视图并过滤查询集，但 DRF 抱怨我没有提供 pk 或 slug。
Do you have any idea?
你有什么主意吗？
采纳答案by Tom Christie
With something like this you're probably best off breaking out of the generic views and writing the view yourself.
有了这样的东西，你可能最好摆脱通用视图并自己编写视图。
@api_view(['GET'])
def current_user(request):
serializer = UserSerializer(request.user)
return Response(serializer.data)
You could also do the same thing using a class based view like so...
您也可以使用基于类的视图来做同样的事情......
class CurrentUserView(APIView):
def get(self, request):
serializer = UserSerializer(request.user)
return Response(serializer.data)
Of course, there's also no requirement that you use a serializer, you could equally well just pull out the fields you need from the user instance.
当然，也没有要求您使用序列化程序，您同样可以从用户实例中提取您需要的字段。
@api_view(['GET'])
def current_user(request):
user = request.user
return Response({
'username': user.username,
'email': user.email,
...
})
Hope that helps.
希望有帮助。
回答by ejb
I used a ModelViewSet like this:
我使用了这样的 ModelViewSet：
class UserViewSet(viewsets.ModelViewSet):
model = User
serializer_class = UserSerializer
def dispatch(self, request, *args, **kwargs):
if kwargs.get('pk') == 'current' and request.user:
kwargs['pk'] = request.user.pk
return super(UserViewSet, self).dispatch(request, *args, **kwargs)
回答by Owais Lone
If you must use the generic view set for some reason, you could do something like this,
如果出于某种原因必须使用通用视图集，则可以执行以下操作，
class UserViewSet(viewsets.ModelViewSet):
model = User
serializer_class = UserSerializer
def get_object(self):
return self.request.user
def list(self, request, *args, **kwargs):
return self.retrieve(request, *args, **kwargs)
retrievemethod is called when the client requests a single instance using an identifier like a primary key /users/10would trigger the retrieve method normally. Retrieve itself calls get_object. If you want the view to always return the current used then you could modify get_objectand force listmethod to return a single item instead of a list by calling and returning self.retrieveinside it.
retrieve当客户端使用像主键/users/10这样的标识符请求单个实例时调用方法会正常触发检索方法。检索自身调用get_object。如果您希望视图始终返回使用的当前值，那么您可以修改get_object并强制list方法通过在其中调用和返回来返回单个项目而不是列表self.retrieve。
回答by ollamh
Instead of using full power of ModelViewSet you can use mixins. There is RetrieveModelMixin used to retrieve single object just like it is mentioned here - http://www.django-rest-framework.org/api-guide/viewsets/#example_3
您可以使用 mixins，而不是使用 ModelViewSet 的全部功能。有 RetrieveModelMixin 用于检索单个对象，就像这里提到的一样 - http://www.django-rest-framework.org/api-guide/viewsets/#example_3
class UserViewSet(mixins.RetrieveModelMixin, viewsets.GenericViewSet):
permission_classes = (permissions.IsAuthenticated,)
queryset = User.objects.all()
serializer_class = UserSerializer
def get_object(self):
return self.request.user
If you need also update your model, just add UpdateModelMixin.
如果您还需要更新模型，只需添加 UpdateModelMixin。
回答by Vladimir Prudnikov
The best way is to use the power of viewsets.ModelViewSetlike so:
最好的方法是使用viewsets.ModelViewSet像这样的力量：
class UserViewSet(viewsets.ModelViewSet):
queryset = User.objects.all()
serializer_class = UserSerializer
def get_object(self):
pk = self.kwargs.get('pk')
if pk == "current":
return self.request.user
return super(UserViewSet, self).get_object()
viewsets.ModelViewSetis a combination of mixins.CreateModelMixin+ mixins.RetrieveModelMixin+ mixins.UpdateModelMixin+ mixins.DestroyModelMixin+ mixins.ListModelMixin+ viewsets.GenericViewSet. If you need just list all or get particular user including currently authenticated you need just replace it like this
viewsets.ModelViewSet是mixins.CreateModelMixin+ mixins.RetrieveModelMixin+ mixins.UpdateModelMixin+ mixins.DestroyModelMixin+ mixins.ListModelMixin+的组合viewsets.GenericViewSet。如果您只需要列出所有或获取特定用户，包括当前已通过身份验证的用户，您只需像这样替换它
class UserViewSet(mixins.RetrieveModelMixin, mixins.ListModelMixin, viewsets.GenericViewSet):
# ...
