Django嵌套URL

Question

如何在django中嵌入网址？例如,如果我将两个模型定义为

class Post(models.Model):
    title = models.CharField(max_length=50)
    body = models.TextField()
    created = models.DateTimeField(auto_now_add=True, editable=False)


    def __unicode__(self):
        return self.title

    @property
    def comments(self):
        return self.comment_set.all()

class Comment(models.Model):
    comment = models.TextField()
    post = models.ForeignKey(Post)
    created = models.DateTimeField(auto_now_add=True)

使用以下url文件

根网址

urlpatterns = patterns('',
    url(r'^post/', include('post.urls')),
)

发布网址

urlpatterns = patterns('',
    url(r'^$', views.PostList.as_view()),
    url(r'^(?P<pk>[0-9]+)/$', views.PostDetail.as_view()),
    url(r'^(?P<pk>[0-9]+)/comments/$', include('comment.urls')),
)

评论网址

urlpatterns = patterns('',
    url(r'^$', CommentList.as_view()),
    url(r'^(?P<pk>[0-9]+)/$', CommentDetail.as_view()),
)

但是当我转到/ post/2/comments/1时,我发现了一个Page not not found错误

Using the URLconf defined in advanced_rest.urls, Django tried these URL patterns, in this order:
^post/ ^$
^post/ ^(?P<pk>[0-9]+)/$
^post/ ^(?P<pk>[0-9]+)/comments/$
The current URL, post/2/comments/1, didn't match any of these.

这不是问题,但是当我访问/发布/ 2 /评论django不允许这样的嵌套URL调用吗？

Answer 1

我想可能是因为你用美元符号完成了正则表达式$.尝试没有美元符号的这一行:

...
url(r'^(?P<pk>[0-9]+)/comments/', include('comment.urls')),
...

希望能帮助到你!

Answer 2

你有一个$结束r'^(?P<pk>[0-9]+)/comments/$'.

这意味着Django只会在之后没有任何内容时匹配该URL.

因此,目前不再考虑任何更长的网址.因此,您需要将正则表达式更新为:

url(r'^(?P<pk>[0-9]+)/comments/', include('comment.urls')),