Django:AttributeError:类型对象 'GroupModel' 没有属性 '_meta'

Question

我是 Django 的新手，当我向 postman 请求时在我的代码中出现了这个错误，有人可以帮我看看我的代码有什么问题吗？

型号:

from django.db import models

class GroupModel(object):
    title=models.CharField(max_length=20)
    description = models.CharField()

    class Meta:
        db_table = 'group'
    def __str__(self):
        return self

---

序列化器:

from rest_framework import serializers
from .models import GroupModel

class GroupSerializer(serializers.ModelSerializer):
    print('hello4')
    class Meta:
        model = GroupModel
        fields = '__all__'

---

观看次数:

from django.shortcuts import render
from django.http import HttpResponse, JsonResponse
from .serializer import GroupSerializer
from .models import GroupModel
from rest_framework.decorators import api_view
from rest_framework import status
@api_view(['POST'])
def InsetGroup(request):
     data = GroupSerializer(data = request.data)

     if request.method == 'POST':
         if data.is_valid():
             data.save()
             return JsonResponse('saved was saccessfull', safe = False)
         return JsonResponse(data.errors, status = status.HTTP_400_BAD_REQUEST, safe = False)

Answer 1

Django 中的模型需要是 Model class [Django-doc] 的子类 :

from django.db import models

class GroupModel(<b>models.Model</b>):
    title=models.CharField(max_length=20)
    description = models.CharField()

    def __str__(self):
        return <b>self.title</b>

    class Meta:
        db_table = 'group'

你的 __str__ 也应该返回一个 string，所以例如 self.title，不是 self，因为那是一个 GroupModel 对象，而不是一个 string。