我正在构建Django项目（1.8）并且我在使用我的一个模型的get_absolute_url方法时遇到了麻烦。我用一些帖子填充了我的数据库，这样我就可以检查我的应用程序。我能够在我的一个视图中列出数据库对象，这样我就知道对象在那里，我的应用程序可以显示它们。问题来了，当我点击一个链接时，视图总是返回404（基本上它找不到要显示的对象）
下面是这个应用程序的大部分代码，我试着在这些片段中包含我的导入，但是为了保持文章简短，我截断了一些。

价值事实/models.py

class ValueFactPost(models.Model):

STATUS_CHOICE = (
    ('draft', 'Draft'),
    ('published', 'Published')
)

title = models.CharField(max_length=250)
slug = models.SlugField(max_length=250, unique_for_date='publish')
author = models.ForeignKey(User, related_name='valueFact_posts') 
publish = models.DateTimeField(default=timezone.now)
body = models.TextField()
created = models.DateTimeField(auto_now_add=True)
updated = models.DateTimeField(auto_now=True)
status = models.CharField(max_length=10,
                          choices=STATUS_CHOICE,
                          default='draft')

stockSymbol = models.ForeignKey('Symbol', null=True )


objects = models.Manager()
published = ValueFactManager()

def get_absolute_url(self):
    return reverse('companies:valuefact_detail', args=[self.publish.year,
                                                       self.publish.strftime('%m'),
                                                       self.publish.strftime('%d'),
                                                       self.slug])

网址.py

from django.conf.urls import include, url
urlpatterns = [

    url(r'^admin/', include(admin.site.urls)),
    url(r'^companies/', include('valueFact.urls', namespace='companies', app_name='companies')),

]

价值事实/urls.py

from django.conf.urls import url
    from . import views
urlpatterns = [

url(r'^$', views.valueFactListView.as_view(), name='valueFact_list'),
url(r'^(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})/(?P<post>[-\w]+)/$',
    views.valuefact_detail,
    name='valuefact_detail'),

]

价值事实/views.py

from django.shortcuts import render, get_object_or_404, render_to_response
from valueFact.models import ValueFactPost, Symbol

class valueFactListView(ListView):
    queryset = ValueFactPost.published.all()
    context_object_name = 'valueFacts'
    paginate_by = 2
    template_name = 'companies/valueFact/list.html'

def valuefact_detail(request, year, month, day, post):
    post = get_object_or_404(ValueFactPost, slug=post,
                             status='published',
                             publish__year=year,
                             publish__month=month,
                             publish__day=day)
    return render(request, 'companies/valuefact/detail.html', {'post':post})

似乎出现问题的模板：

列表.html

{% for post in valueFacts %}
    <a href="{{ post.get_absolute_url }}">

        {{ post.title}}
    </a>
    </h2>
    <p class="date">
        Published {{post.publish}} by {{post.author}}
    </p>
    {{post.body|truncatewords:30|linebreaks}}
    {% endfor %}**

django控制台中的错误是：页面未找到：/companies/2016/03/23/海钻-债务/
我已经花了过多的时间在这个问题上，可能需要有人几分钟来解决。提前感谢。