如何解决Django Rest API仅显示一些网址
我已使用Django教程创建了民意调查应用,并再次在该教程中添加了REST API。
我认为我的urlpatterns配置中某处出错,因为我只能看到一些页面,其余页面给我一个错误。
我的根url.py:
from django.urls import path,include
from polls import views,viewsets
urlpatterns = [
path('',include('polls.urls')),path('polls/',include('polls.urls',namespace="polls")),path('admin/',admin.site.urls),]
urlpatterns += [
path('api-auth/',include('rest_framework.urls')),]
我的应用级url.py:
from . import views,viewsets
from .viewsets import QuestionViewSet,UserViewSet,ResultsViewSet
from rest_framework import renderers
from rest_framework.routers import DefaultRouter
router = DefaultRouter()
router.register(r'questions',viewsets.QuestionViewSet)
router.register(r'users',viewsets.UserViewSet)
router.register(r'results',viewsets.ResultsViewSet)
app_name = 'polls'
urlpatterns = [
path('',views.IndexView.as_view(),name='index'),path('<int:pk>/',views.DetailView.as_view(),name='detail'),path('<int:pk>/results/',views.ResultsView.as_view(),name='results'),path('<int:question_id>/Vote/',views.Vote,name='Vote'),path('',include(router.urls)),]
viewsets.py:
from django.utils import timezone
from .models import Choice,Question
from .serializers import QuestionSerializer,UserSerializer,ChoiceSerializer
from rest_framework import generics
from django.contrib.auth.models import User
from rest_framework import permissions
from .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 viewsets
class QuestionViewSet(viewsets.ModelViewSet):
queryset = Question.objects.filter(pub_date__lte=timezone.Now()).order_by('-pub_date')
serializer_class = QuestionSerializer
permission_classes = [permissions.IsAuthenticatedOrReadOnly,IsOwnerOrReadOnly]
def perform_create(self,serializer):
serializer.save(owner=self.request.user)
class UserViewSet(viewsets.ReadOnlyModelViewSet):
queryset = User.objects.all()
serializer_class = UserSerializer
class ResultsViewSet(viewsets.ModelViewSet):
queryset = Choice.objects.all()
serializer_class = ChoiceSerializer
permission_classes = [permissions.IsAuthenticatedOrReadOnly,serializer):
serializer.save(owner=self.request.user)
@api_view(['GET'])
def api_root(request,format=None):
return Response({
'users': reverse('user-list',request=request,format=format),'questions': reverse('question-list',})
views.py:
from django.shortcuts import render,get_object_or_404
from django.urls import reverse
from django.views import generic
from django.utils import timezone
from .models import Choice,Question
class IndexView(generic.ListView):
template_name = 'polls/index.html'
context_object_name = 'latest_question_list'
def get_queryset(self):
return Question.objects.filter(
pub_date__lte=timezone.Now()
).order_by('-pub_date')[:5]
class DetailView(generic.DetailView):
model = Question
template_name = 'polls/detail.html'
def get_queryset(self):
#excludes any questions that aren't published yet.
return Question.objects.filter(pub_date__lte=timezone.Now())
class ResultsView(generic.DetailView):
model = Question
template_name = 'polls/results.html'
def Vote(request,question_id):
question = get_object_or_404(Question,pk=question_id)
try:
selected_choice = question.choice_set.get(pk=request.POST['choice'])
except (KeyError,Choice.DoesNotExist):
return render(request,'polls/detail.html',{
'question': question,'error_message': "You didn't select a choice.",})
else:
selected_choice.Votes += 1
selected_choice.save()
return HttpResponseRedirect(reverse('polls:results',args=(question.id,)))
models.py:
from django.db import models
from django.utils import timezone
class Question(models.Model):
question_text = models.CharField(max_length=200)
pub_date = models.DateTimeField('date published')
owner = models.ForeignKey('auth.User',related_name='questions',null=True,blank=True,on_delete=models.CASCADE)
def __str__(self):
return self.question_text
def was_published_recently(self):
Now = timezone.Now()
return Now - datetime.timedelta(days=1) <= self.pub_date <= Now
was_published_recently.admin_order_field = 'pub_date'
was_published_recently.boolean = True
was_published_recently.short_description = 'Published recently?'
def create(self,validated_data):
return Question.objects.create(**validated_data)
def update(self,instance,validated_data):
instance.question_text = validated_data.get('question_text',instance.question_text)
instance.save()
return instance
def save(self,*args,**kwargs):
super(Question,self).save(*args,**kwargs)
class Choice(models.Model):
question = models.ForeignKey(Question,on_delete=models.CASCADE)
choice_text = models.CharField(max_length=200)
Votes = models.IntegerField(default=0)
owner = models.ForeignKey('auth.User',related_name='choices',on_delete=models.CASCADE)
def __str__(self):
return self.choice_text
可以使用的网址:
http:// localhost:8000 /
http:// localhost:8000 / polls /
http:// localhost:8000 / polls / 1 /
http:// localhost:8000 / polls / 1 / results /
http:// localhost:8000 / polls / 1 / Vote /
http:// localhost:8000 / users /(为什么这仅作为与API相关的链接?!)
http:// localhost:8000 / api-auth / login /
http:// localhost:800 / admin /
网址不正确:
http:// localhost:8000 / questions /
http:// localhost:8000 / results /
如果您需要查看其他任何代码,请告诉我。
谢谢!
解决方法
当Django向您显示网址时,表示您输入了错误的网址。
例如,当您想打开管理页面时,应输入: 网址中的localhost:8000 / admin /
我认为你应该使用
http://localhost:8000/polls/questions/
代替http://localhost:8000/questions/
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