【问题标题】：Django REST Framework got Server Error 500Django REST 框架得到服务器错误 500
【发布时间】：2020-04-22 13:28:40
【问题描述】：

我在 django-rest-framework quickstart 关注了 turial

我有两个网址，即/users/ 和/groups/

group 完美运行：

但user url 出现如下错误：

服务器错误 500

我将DEBUG 设置为False，然后在settings.py 中将一些主机添加到ALLOWED_HOST：

DEBUG = False

ALLOWED_HOSTS = [
    '127.0.0.1',
    'localhost'
]

INSTALLED_APPS = [
    'rest_framework',
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
]

我的urls.py:

from django.contrib import admin
from django.urls import include, path
from rest_framework import routers
from django_rest.django_rest_app import views

router = routers.DefaultRouter()
router.register(r'users', views.UserViewSet)
router.register(r'groups', views.GroupViewSet)

# Wire up our API using automatic URL routing.
# Additionally, we include login URLs for the browsable API.
urlpatterns = [
    path('', include(router.urls)),
    path('api-auth/', include('rest_framework.urls', namespace='rest_framework'))
]

这是我的serializers.py：

from django.contrib.auth.models import User, Group
from rest_framework import serializers

class UserSerializer(serializers.HyperlinkedModelSerializer):
  class Meta:
    model = User
    fields = ['url','username','email','group']
class GroupSerializer(serializers.HyperlinkedModelSerializer):
  class Meta:
    model = Group
    fields = ['url','name']

这是我的views.py：

from django.shortcuts import render
from django.contrib.auth.models import User, Group
from rest_framework import viewsets
from rest_framework import permissions
from django_rest.django_rest_app.serializers import UserSerializer, GroupSerializer

class UserViewSet(viewsets.ModelViewSet):
  """
  API endpoint that allows users to be viewed or edited.
  """
  queryset = User.objects.all().order_by('-date_joined')
  serializer_class = UserSerializer
  permission_classes = [permissions.IsAuthenticated]
class GroupViewSet(viewsets.ModelViewSet):
  """
  API endpoint that allows groups to be viewed or edited.
  """
  queryset = Group.objects.all()
  serializer_class = GroupSerializer
  permission_classes = [permissions.IsAuthenticated]

更新

当我再次将DEBUG 设置为True 时，我得到了这个：

字段名称group 对模型User 无效

我还是个初学者，希望能帮到你
谢谢。

【问题讨论】：

您能否将您在日志中获得的完整回溯添加到您的问题中
Django User 模型没有名为 group 的字段，这可能是您的问题？
当我在日志中runserver 时，所有正常的网络显示都照常出现，当我在 URL 上写 http: //127.0.0.1:8000/users/ 时，然后在我的日志中显示：[22 / Apr / 2020 12:01:32] GET / users / HTTP / 1.1 500 145。 @IainShelvington
是的，以前我收到此错误The Django User model does not have a field named group，但现在已解决..
User 上没有“组”字段，是否要返回UserSerializer 中的组列表？

标签： python django django-rest-framework

【解决方案1】：

你在UserSerializer课堂上犯了错误

class UserSerializer(serializers.HyperlinkedModelSerializer):
  class Meta:
    model = User
    fields = ['url','username','email','group']

请按如下方式更改

class UserSerializer(serializers.HyperlinkedModelSerializer):
  class Meta:
    model = User
    fields = ['url','username','email','groups']

User 模型中没有名为 'group' 的字段。相反，它是'groups'。

【讨论】：