Vue资源和Django Rest Framework。如何使用用户主键更新UserProfile

Question

模型

class UserProfile(models.Model):
    user = models.OneToOneField(User, primary_key=True)
    locations = models.ManyToManyField(Location, verbose_name="Location")
    ...

DRF观点

class UserProfileView(generics.RetrieveUpdateAPIView):
    permission_classes = (IsAuthenticated,)
    serializer_class = UserProfileSerializer

    def get_object(self, queryset=None):
        return UserProfile.objects.get(user=self.request.user)

    def get(self, request, *args, **kwargs):
        return self.retrieve(request, *args, **kwargs)

DRF网址

  url(r'^user/$', UserProfileView.as_view()),
  url(r'^user/(?P<pk>[0-9]+)/$', UserProfileView.as_view()),

我的Vue资源：

 Vue.http.patch(`${BASE_URL}/user/`, profile)

但是我得到了这样的错误：

 ValueError: Cannot assign "3": "UserProfile.user" must be a "User" instance

如何从Vue发布用户实例？ （我尝试更新位置字段发送PATCH，如{user：3，locations：[1,2,3]}