转换为使用 URL 路由器导致 ImproperlyConfigured 异常

Question

我一直在学习 Django Rest Framework 教程和 very last step 我遇到错误：

Exception Type: ImproperlyConfigured.
Exception Value:
Could not resolve URL for hyperlinked relationship using view name "snippet-detail". You may have failed to include the related model in your API, or incorrectly configured the lookup_field attribute on this field.

当试图查看 /settings/ 或 /users/ 时（访问任何用户页面都会产生相同的异常，但用“user-detail”代替“snippet-detail”）以及它们的任何特定索引等等。所有的工作都是root和登录。

到目前为止我的所有代码都运行良好，我很困惑为什么从教程中复制粘贴会产生如此灾难性的结果

在将我的代码片段文件与 tutorial's repo 上可用的代码片段文件进行比较时，我没有发现任何显着差异（我发现的只是空格中的不一致）。话虽如此，这是我正在使用的代码。

snippets/views.py:

from snippets.models import Snippet
from snippets.serializers import SnippetSerializer, UserSerializer
from rest_framework import generics, permissions
from django.contrib.auth.models import User
from snippets.permissions import IsOwnerOrReadOnly
from rest_framework.decorators import api_view
from rest_framework.response import Response
from rest_framework.reverse import reverse
from rest_framework import renderers
from rest_framework.decorators import action
from rest_framework.response import Response
from rest_framework import permissions


from rest_framework import viewsets

class UserViewSet(viewsets.ReadOnlyModelViewSet):
    """
    This viewset automatically provides `list` and `retrieve` actions.
    """
    queryset = User.objects.all()
    serializer_class = UserSerializer

class SnippetViewSet(viewsets.ModelViewSet):
    """
    This viewset automatically provides `list`, `create`, `retrieve`,
    `update` and `destroy` actions.

    Additionally we also provide an extra `highlight` action.
    """
    queryset = Snippet.objects.all()
    serializer_class = SnippetSerializer
    permission_classes = [permissions.IsAuthenticatedOrReadOnly,
                          IsOwnerOrReadOnly]

    @action(detail=True, renderer_classes=[renderers.StaticHTMLRenderer])
    def highlight(self, request, *args, **kwargs):
        snippet = self.get_object()
        return Response(snippet.highlighted)

    def perform_create(self, serializer):
        serializer.save(owner=self.request.user)

snippets/urls.py:

from django.urls import path, include
from rest_framework.routers import DefaultRouter
from snippets import views

# Create a router and register our viewsets with it.
router = DefaultRouter()
router.register(r'snippets', views.SnippetViewSet,basename="snippets")
router.register(r'users', views.UserViewSet,basename="users")

# The API URLs are now determined automatically by the router.
urlpatterns = [
    path('', include(router.urls)),
]

snippets/serializers.py:

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

from snippets.models import Snippet


class SnippetSerializer(serializers.HyperlinkedModelSerializer):
    owner = serializers.ReadOnlyField(source='owner.username')
    highlight = serializers.HyperlinkedIdentityField(
        view_name='snippet-highlight', format='html')

    class Meta:
        model = Snippet
        fields = ('url', 'id', 'highlight', 'owner', 'title', 'code',
                  'linenos', 'language', 'style')


class UserSerializer(serializers.HyperlinkedModelSerializer):
    snippets = serializers.HyperlinkedRelatedField(
        many=True, view_name='snippet-detail', read_only=True)

    class Meta:
        model = User
        fields = ('url', 'id', 'username', 'snippets')

tutorial/urls.py:

"""tutorial URL Configuration

The `urlpatterns` list routes URLs to views. For more information please see:
    https://docs.djangoproject.com/en/4.0/topics/http/urls/
Examples:
Function views
    1. Add an import:  from my_app import views
    2. Add a URL to urlpatterns:  path('', views.home, name='home')
Class-based views
    1. Add an import:  from other_app.views import Home
    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
Including another URLconf
    1. Import the include() function: from django.urls import include, path
    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
"""
from django.contrib import admin
from django.urls import include, path

urlpatterns = [
    path('admin/', admin.site.urls),
    path('', include('snippets.urls')),
]

urlpatterns += [
    path('api-auth/', include('rest_framework.urls')),
]

Answer 1

路由器被传递了错误的基本名称（片段和用户的复数形式而不是单数形式）。感谢@IainShelvington 在评论中的回答！
详细说明：

from django.urls import path, include
from rest_framework.routers import DefaultRouter
from snippets import views

    # Create a router and register our viewsets with it.
    router = DefaultRouter()
    router.register(r'snippets', views.SnippetViewSet,basename="snippets")
    router.register(r'users', views.UserViewSet,basename="users")
    
    # The API URLs are now determined automatically by the router.
    urlpatterns = [
        path('', include(router.urls)),
    ]

应该是

from django.urls import path, include
from rest_framework.routers import DefaultRouter
from snippets import views

# Create a router and register our viewsets with it.
router = DefaultRouter()
router.register(r'snippets', views.SnippetViewSet,basename="snippet")
router.register(r'users', views.UserViewSet,basename="user")

# The API URLs are now determined automatically by the router.
urlpatterns = [
    path('', include(router.urls)),
]

转换为使用 URL 路由器导致 ImproperlyConfigured 异常

Converting to using URL router is causing a ImproperlyConfigured exception

django

django-rest-framework

django-views

django-urls