python - 避免重复 Django URL

Question

我正在官方网站上制作 Django 教程，目前我是 setting up URLs对于我们正在创建的示例投票应用程序。

截至目前，我的 polls/urls.py看起来像这样:

from django.conf.urls import url

from . import views

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

我不禁注意到 (?P<question_id>[0-9]+) 的重复所以我想知道除了将其提取为像QUESTION_PATTERN = (?P<question_id>[0-9]+)这样的常量之外是否有更简单的方法来避免这种情况

Answer 1

您可以包含一个子模式列表，如下所示:

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