为什么Django无法找到带有给定子弹的对象？

Question

Django告诉您找不到带有给定子弹的对象（即404代码）。虽然返回的queryset不为空

class PollDetailView(RetrieveAPIView):
    serializer_class = PollSerializer

    def get_queryset(self):
        slug = self.kwargs['pk']
        print(Poll.objects.filter(slug=slug)) # Prints '<QuerySet [<Poll: ddd>]>' reaching '/api/poll/ddd/' url
        return Poll.objects.filter(slug=slug) # 404 Not Found

Answer 1

在您的PollDetailView

中添加look_up字段

look_up = 'slug'

并在您的urls.py

中

将PollDetailView的网址更改为

url(r'^api/polls/(?P<slug>[\w-]+)/$', views.PollDetail.as_view(),name='poll-detail'),