Django新手-NoReverseMatch错误

刚开始使用Django，但遇到了点麻烦-我决定在参考Django basic应用程序库的同时尝试编写一个简单的博客引擎

在blog/urls.py中，我将此条目映射到日期对应的实际帖子，例如blog/2009/aug/01/test post

urlpatterns = patterns('',
    url(r'^(?P<year>\d{4})/(?P<month>\w{3})/(?P<day>\d{1,2})/(?P<slug>[-\w]+)/$', 'blog.views.post_detail'),
    ...

在这个模型中，我实现了

get_absolute\u url

，这样我就可以在主博客页面上单击一篇文章的标题来查看它：

class Content(models.Model):
    ...
@permalink
def get_absolute_url(self):
    return ('blog.views.post_detail', (), {
        'slug': self.slug,
        'year': self.created_at.year,
        'month': self.created_at.strftime('%b').lower(),
        'day': self.created_at.day
    })

最后，在主页的帖子列表中，应该在标题中插入永久链接：

{% for content in object_list %}
<div class="content_list">
<h3 class="content_title"><a href="{{ content.get_absolute_url }}">{{ content.title }}</a></h3>
<p class="content_date">{{ content.published_at|date:"Y F d"}}</p>
<p class="content_body">{{ content.body }}</p>
<p class="content_footer">updated by {{ content.author }} at {{ content.updated_at|timesince }} ago</p>
</div>
{% endfor %}

---

编辑：原来这是一个Python名称空间问题（见下文）。但不管怎样，上面显示的我的url.py是否不正确？

在谷歌上搜索了其他Django新手教程，并想出了将所有URL放入父文件夹url.py的主意，这似乎解决了问题。：）最后，我的mainurl.py现在有：

from djangoblog.blog import views
urlpatterns = patterns('',

    (r'^blog/(?P<year>\d{4})/(?P<month>\w{3})/(?P<day>\d{1,2})/(?P<slug>[-\w]+)/$',
    views.post_detail),
    (r'^blog/(?P<year>\d{4})/(?P<month>\w{3})/(?P<day>\d{1,2})/$',
    views.post_archive_day),
    ...

NoReverseMatch: Reverse for '<function post_detail at 0xa3d59cc>' with arguments '()' and keyword arguments '{'year': 2009, 'slug': u'another_test', 'day': 15, 'month': 'aug'}' not found.

from djangoblog.blog import views
urlpatterns = patterns('',

    (r'^blog/(?P<year>\d{4})/(?P<month>\w{3})/(?P<day>\d{1,2})/(?P<slug>[-\w]+)/$',
    views.post_detail),
    (r'^blog/(?P<year>\d{4})/(?P<month>\w{3})/(?P<day>\d{1,2})/$',
    views.post_archive_day),
    ...

from blog import views
...
(r'(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{1,2})/(?P<slug>[-\w]+)/$',
    'object_detail', dict(info_dict, slug_field='slug', month_format='%m'),
    'post_detail'),
...
(r'category/(?P<slug>[-\w]+)/$', views.category_detail),

class Post:
    @permalink
    def get_absolute_url(self):
    return ('post_detail', (), {
                  ....

class Category:
    @permalink
def get_absolute_url(self):
    return ('blog.views.category_detail', (), {'slug': self.slug})