MxCreateSerializer 类型的对象不是 JSON 可序列化的

Question

我正在做一个 django 项目，我有一个 django 模型消息：

class Message(models.Model):
    content     = models.TextField(_('Content'))
    sender      = models.ForeignKey(settings.AUTH_USER_MODEL, related_name='sent_dm', verbose_name=_("Sender"),on_delete=models.CASCADE)
    recipient   = models.ForeignKey(settings.AUTH_USER_MODEL, related_name='received_dm', verbose_name=_("Recipient"),on_delete=models.CASCADE)
    sent_at     = models.DateTimeField(_("sent at"), null=True, blank=True)

---

视图.py

class MessageCreateView(APIView):
    queryset = Message.objects.all()
    serializer_class = MxCreateSerializer

    def get(self, request, format=None):
        serializer = MxCreateSerializer()
        return Response({'serializer':serializer})
        
    def post(self, request):
        sent_data   = request.data
        #print(sent_data)
        data_       = [elem for elem in sent_data.values()]
        sender      = data_[0]
        content     = data_[1]
        recipient   = data_[2]
        csrf        = data_[3]
        sender      = get_object_or_404(User,username=sender).username
        recipient   = get_object_or_404(User,username=recipient).username
        new_resp    = {'sender':sender,'content':content,'recipient':recipient, 'csrfmiddlewaretoken':csrf}
        qdict       = QueryDict('', mutable=True)
        qdict.update(new_resp)
        #print(qdict)
        serializer          = MxCreateSerializer(data=qdict)
        if not serializer.is_valid():
            return Response({'message':'no'})
        serializer.save()
        return Response({'message':'yes'})

---

序列化程序.py

class MxCreateSerializer(serializers.ModelSerializer):
    class Meta:
        model = Message
        fields = ['sender','content','recipient']

    def create(self, validated_data):
        message = Message.objects.create(**validated_data)
        print(message)
        return message

---

我收到此错误：

回溯（最近一次调用最后一次）：

...
  File "/.../site-packages/django/template/response.py", line 105, in render
    self.content = self.rendered_content
  File "/.../site-packages/rest_framework/response.py", line 70, in rendered_content
    ret = renderer.render(self.data, accepted_media_type, context)
  File "/.../site-packages/rest_framework/renderers.py", line 724, in render
    context = self.get_context(data, accepted_media_type, renderer_context)
  File "/.../site-packages/rest_framework/renderers.py", line 680, in get_context
    'content': self.get_content(renderer, data, accepted_media_type, renderer_context),
  File "/.../site-packages/rest_framework/renderers.py", line 413, in get_content
    content = renderer.render(data, accepted_media_type, renderer_context)
  File "/.../site-packages/rest_framework/renderers.py", line 103, in render
    allow_nan=not self.strict, separators=separators
  File "/.../site-packages/rest_framework/utils/json.py", line 25, in dumps
    return json.dumps(*args, **kwargs)
  File "/.../python3.7/json/__init__.py", line 238, in dumps
    **kw).encode(obj)
  File "/.../python3.7/json/encoder.py", line 201, in encode
    chunks = list(chunks)
  File "/.../python3.7/json/encoder.py", line 431, in _iterencode
    yield from _iterencode_dict(o, _current_indent_level)
  File "/.../python3.7/json/encoder.py", line 405, in _iterencode_dict
    yield from chunks
  File "/.../python3.7/json/encoder.py", line 438, in _iterencode
    o = _default(o)
  File "/.../site-packages/rest_framework/utils/encoders.py", line 67, in default
    return super().default(obj)
  File "/.../python3.7/json/encoder.py", line 179, in default
    raise TypeError(f'Object of type {o.__class__.__name__} '

异常类型：/mxcreate/ 处的类型错误

异常值：MxCreateSerializer 类型的对象不是 JSON 可序列化的

---

谢谢你的任何建议

Answer 1

响应中的序列化程序数据应该像这样发送

def get(self, request, format=None):
    serializer = MxCreateSerializer()
    return Response({'serializer':serializer.data})

注意：带有序列化程序的.data