如何从Django rest API中的ModelViewSet类获取请求的用户名？

Question

I have the following code. It allows uploading an Image using Rest API's in Django. How ever due to the nature of this class I am unable to get the user the way it's usually done (request.user)

view.py

class PhotoViewSet(viewsets.ModelViewSet, APIView):
    permission_classes = (permissions.IsAuthenticated,)

    queryset = Photo.objects.all()  
    serializer_class = PhotoSerializer

    @receiver(post_save, sender=Photo)
    def my_handler(sender, instance, **kwargs):
        print request.user.username #How to make this work?

url.py

router = routers.SimpleRouter()
router.register(r'avatar', PhotoViewSet, base_name='love_stackoverflow')

Answer 1

如果要将用户添加到Photo实例，请使用PhotoSerializer中的CurrentUserDefault （作为只读字段），或将用户传递到视图的perform_create 的序列化器的save