python之Django:如何在 gereric DetailView 中使用自定义 slug(必须使用对象 pk 或 slug 调用通用详细 View DetailView)

I am newbie on python django. when following Django Tutorial > Part04 > Generic View , i have trouble with using Detail View. and actually its my first question on StackOverflow, so if i am wrong with something, please let me know. Thanks very much.

我想要什么？

• 我想url(r'^(?P<question_id>\d+)/$', views.DetailView.as_view(), name="detail")优于url(r'^(?P<pk>\d+)/$', views.DetailView.as_view(), name="detail") .因为它更具可读性和直观性。
• 所以我不想改变polls/urls.py .
• 我如何使用详细 View ，但仍保留 <CUSTOM_SLUG>在 views.py

源代码

django_project/polls/urls.py (目前不工作)

urlpatterns = patterns('', 
    url(r'^$', views.IndexView.as_view(), name="index"), 
    url(r'^(?P<question_id>\d+)/$', views.DetailView.as_view(), name="detail"), 
    url(r'^(?P<question_id>\d+)/results/$', views.results, name="results"), 
    url(r'^(?P<question_id>\d+)/vote/$', views.vote, name="vote"), 
    ) 

django_project/polls/urls.py (工作来源，但我不想要这个。)

urlpatterns = patterns('', 
    url(r'^$', views.IndexView.as_view(), name="index"), 
    url(r'^(?P<pk>\d+)/$', views.DetailView.as_view(), name="detail"), 
    url(r'^(?P<question_id>\d+)/results/$', views.results, name="results"), 
    url(r'^(?P<question_id>\d+)/vote/$', views.vote, name="vote"), 
    ) 

django_project/polls/views.py

class DetailView(generic.DetailView): 
  model = Question 
  template_name = "polls/detail.html" 

错误信息

通用详细 View DetailView 必须使用对象 pk 或 slug 调用。

请您参考如下方法:

https://docs.djangoproject.com/en/1.6/intro/tutorial04/

The DetailView generic view expects the primary key value captured from the URL to be called "pk", so we’ve changed poll_id to pk for the generic views.

所以这显然行不通:

url(r'^(?P<question_id>\d+)/$', views.DetailView.as_view(), name="detail"), 

而这将起作用:

url(r'^(?P<pk>\d+)/$', views.DetailView.as_view(), name="detail"), 

子类化 DetailView 以使用不同的正则表达式组名称:

https://github.com/django/django/blob/master/django/views/generic/detail.py

但是如果你将 DetailView 子类化，你可以告诉它什么是 pk 参数:

class MyCustomDetailView(DetailView): 
    pk_url_kwarg = 'object_id' 

pk 是django中的标准术语；虽然这可能会使您的代码对您来说更具可读性， 其他对 django 感到满意的人可能认为 pk 更具可读性。如果您想自定义所有小细节，使用通用 View 有什么意义？