python - 民意调查应用程序——django 教程不工作

Question

我正在处理 Polls tutorial for Django .我已经做到了第六部分的开头。

出于某种原因，我所有基于类的通用 View 都可以EXCEPT 基于类的索引 View 。尝试加载 localhost:8000/时出现以下错误:

Page not found (404)
Request Method: GET
Request URL:    http://localhost:8000/

Using the URLconf defined in mysite.urls, Django tried these URL patterns, in this order:
^polls/
^admin/

The current URL, , didn't match any of these.

这是我的 mysite/urls.py:

from django.conf.urls import include, url
from django.contrib import admin


urlpatterns = [
   url(r'^polls/', include('polls.urls')),
   url(r'^admin/', admin.site.urls),
]

这是我的 polls/urls.py

from django.conf.urls import url

from . import views

app_name = 'polls'

urlpatterns = [
   url(r'^$', views.IndexView.as_view(), name='index'),
   url(r'^(?P<pk>[0-9]+)/$', views.DetailView.as_view(), name='detail'),
   url(r'^(?P<pk>[0-9]+)/results/$', views.ResultsView.as_view(), name='results'),
   url(r'^(?P<question_id>[0-9]+)/vote/$', views.vote, name='vote'),
]

这里是 polls/views.py。我只是粘贴 IndexView 部分。其余基于类的 View 目前正在运行:

from django.shortcuts import get_object_or_404, render
from django.http import HttpResponseRedirect
from django.urls import reverse
from django.views import generic
from django.utils import timezone

from .models import Choice, Question

# Create your views here.
class IndexView(generic.ListView):
    template_name = 'polls/index.html'
    context_object_name = 'latest_question_list'

    def get_queryset(self):
        # Return last five published questions (not inc. future)
        return Question.objects.filter(
        pub_date__lte=timezone.now()
        ).order_by('-pub_date')[:5]

我错过了什么吗？任何帮助将不胜感激。

Answer 1

您的索引 url 模式在 polls/urls.py 中，您将其包含在 r'^polls/' 下所以你应该访问它:

http://localhost:8000/polls/

为 http://localhost:8000/ 获取 404是预期的行为，因为您的主要 urls.py仅包含位于 admin/ 的网址和 polls/ .您必须使用正则表达式 r'^$' 添加 url 模式至 main/urls.py停止 404。