Django URL配置

Question

假设我有3个模型：城市，区域，条目。

每个城市都有几个区域，每个区域可以有几个条目但是“现在”，只有一个活动条目，它将被显示。所以在逻辑上：

请注意，每个城市，区域，条目都将使用相关模型类的slug变量

格式将如下：

www.mysite.com/<slug of city>/<slug of area>/<slug of entry>

www.mysite.com/mycity/myarea/ - ＆gt;将显示绑定到该区域并且处于活动状态的条目（可以使用区域的active_entry功能检测到这一点。）

但是用户可以查看一些旧的条目，例如：

www.mysite.com/mycity/myarea/some-old-entry-that-is-no-longer-active

我已经通过阅读“Practical Django Projects 2nd Edition”一书编写了get_absolute_url函数，但现在我被困了。

我有这样的模特：

from django.db import models

class Entry(models.Model):
    area = models.ForeignKey('Area',verbose_name="The area that this entry belongs to")
    slug = slug = models.SlugField(unique=True) # this will be auto populated via admin panel, from title
    title = baslik = models.CharField()
    content = models.TextField()
    start_time = models.DateTimeField()#start time for this entry.
    end_time = models.DateTimeField()#end time for this entry.

    @models.permalink
    def get_absolute_url(self):
        return ("entry.detail",(),{"city":self.area.city.slug,"area":self.area.slug,"entry":self.slug})



class Area(models.Model):
    city = models.ForeignKey(verbose_name="city that this area belongs to")
    name = models.CharField(max_length=30)
    slug = models.SlugField(unique=True)# this will be auto populated via admin panel, from name

    @models.permalink
    def get_absolute_url(self):
        return ("bolge.detay",(),{"city":self.city.slug,"area":self.slug})

    def active_entry(self):
        from datetime import datetime, date, time
        now = datetime.now()
        try:
            return Entry.objects.get(area__exact=self,start_time__lte=now,end_time__gte=now)
        except Entry.DoesNotExist:
            return False



class City(models.Model):
    name =models.CharField(max_length=30)
    slug = models.SlugField(unique=True) # this will be auto populated via admin panel, from name
    @models.permalink
    def get_absolute_url(self):
        return ("city.detail",(),{"city":self.slug})

请帮助这个可怜的灵魂配置他的网址配置。

由于

Answer 1

应该看起来像这样：

urlpatterns = patterns('',
    (r'^(?P<city>[a-z-]+)/(?P<area>[a-z-]+)/$', 'yourapp.views.areaview'),
    (r'^(?P<city>[a-z-]+)/(?P<area>[a-z-]+)/(?P<entry>[a-z-]+)/$', 'yourapp.views.entryview'),
)