如何使用 Django RF 修补 Django 的用户模型？

Question

我的 UserProfile 模型包含 phone、profile_photo 和 Django 默认用户模型的一些字段，例如 first_name、last_name、email，我正在尝试更新其中一些字段。

models.py

class UserProfile(models.Model):
    user = models.ForeignKey(User, verbose_name="User")
    phone = models.CharField(max_length=16, verbose_name="Phone")
    profile_photo = models.ImageField(null=True, blank=True, upload_to=user_directory_path, verbose_name="Profile Photo")

serializers.py

class UserSerializer(serializers.ModelSerializer):
    class Meta:
        model = User
        fields = ('url', 'first_name', 'last_name', 'email')

class UserProfileSerializer(serializers.ModelSerializer):
    user = UserSerializer(partial=True)

    class Meta:
        model = UserProfile
        fields = '__all__'

    def create(self, validated_data):
        user_profile = UserProfile.objects.create(**validated_data)
        return user_profile

views.py

class UserProfileViewSet(viewsets.ModelViewSet):
    queryset = UserProfile.objects.all()
    serializer_class = UserProfileSerializer
    authentication_classes = (TokenAuthentication,)

    @detail_route(methods=['PATCH'], url_path='update-partial')
    def user_profile_update_partial(self, request, pk=None):
        profile = UserProfile.objects.get(id=pk)
        serializer = self.get_serializer(profile, data=request.data, partial=True)
        if serializer.is_valid():
            serializer.save()
            return Response(serializer.data, status=status.HTTP_202_ACCEPTED)
        else:
            return Response(status=status.HTTP_400_BAD_REQUEST)

如果我使用此@detail_route 发送profile_photo、phone、first_name 或last_name 数据，我只能更新电话和profile_photo 字段。当profile_photo 数据未发送时也会出现 Bad Request 错误。

如何使用PATCH 方法实现partial_update？

Answer 1

class UserProfileViewSet(viewsets.ModelViewSet):
    queryset = UserProfile.objects.all()
    serializer_class = UserProfileSerializer
    authentication_classes = (TokenAuthentication,)

    def partial_update(self, request, *args, **kwargs):
        profile = self.get_object()
        serializer = self.get_serializer(profile, data=request.data, partial=True)
        if serializer.is_valid():
            user_serializer = UserSerializer(profile.user, data=request.data, partial=True)
            if user_serializer.is_valid():
                user_serializer.save()
                serializer.save()
                return Response(serializer.data, status=status.HTTP_202_ACCEPTED)
            else:
               return Response(data=user_serializer.errors, status=status.HTTP_400_BAD_REQUEST)
        else:
            return Response(data=serializer.errors,status=status.HTTP_400_BAD_REQUEST)

Q1：如何实现PATCH方法？

A1：覆盖partial_update 方法。

Q2：如何更新first_name或last_name？

A2：用另一个名为UserSerializer的序列化器更新它。（如果你想更新密码，你需要在将原始密码保存到数据库之前使用make_password方法创建编码密码）