我在本教程的最后一部分。
from django.conf.urls import patterns, include, url
from django.views.generic import DetailView, ListView
from polls.models import Poll
urlpatterns = patterns('',
url(r'^$',
ListView.as_view(
queryset=Poll.objects.order_by('-pub_date')[:5],
context_object_name='latest_poll_list',
template_name='polls/index.html')),
url(r'^(?P<pk>\d+)/$',
DetailView.as_view(
model=Poll,
template_name='polls/detail.html')),
url(r'^(?P<pk>\d+)/results/$',
DetailView.as_view(
model=Poll,
template_name='polls/results.html'),
name='poll_results'),
url(r'^(?P<poll_id>\d+)/vote/$', 'polls.views.vote'),
)
ListView 有效，但是当我使用 DetailView 访问 url 时，我得到了。
AttributeError at /polls/2/
Generic detail view DetailView must be called with either an object pk or a slug.
Request Method: GET
Request URL: http://127.0.0.1:8000/polls/2/
Django Version: 1.4.1
Exception Type: AttributeError
Exception Value:
Generic detail view DetailView must be called with either an object pk or a slug.
Exception Location: /home/yasith/coding/django/django-tutorial/lib/python2.7/site-packages/django/views/generic/detail.py in get_object, line 46
Python Executable: /home/yasith/coding/django/django-tutorial/bin/python2
Python Version: 2.7.3
我不确定我做错了什么。任何帮助，将不胜感激。
编辑：添加主 urls.py
from django.conf.urls import patterns, include, url
from django.contrib import admin
admin.autodiscover()
urlpatterns = patterns('',
url(r'^polls/', include('polls.urls')),
url(r'^admin/', include(admin.site.urls)),
)