怎么用django里的Category模型？有代码。

[cndeer]

models.py

# -*- coding:utf-8 -*-
from django.db import models
import datetime

#信息分类
class Category(models.Model):
    name = models.CharField(max_length=18, unique=True)
    sign_id = models.PositiveSmallIntegerField(unique=True)
    def __unicode__(self):
        return self.name
    class Meta:
        ordering = ['sign_id']
        verbose_name_plural = '栏目'

#文章信息

class Archive(models.Model):
    title = models.CharField(max_length=36)
    content = models.TextField(max_length=1800)
    category = models.ForeignKey(Category, null=True, blank=True)
    pub_date = models.DateTimeField(auto_now_add=True)
    last_update = models.DateTimeField(auto_now_add=True)
    views_amount = models.IntegerField(default=0)

    class Meta:
        verbose_name = '文章'
        verbose_name_plural = '文章列表'

    def __unicode__(self):
        return self.title

这是views.py

# -*- coding:utf-8 -*-
from django.shortcuts import render_to_response, get_object_or_404
from blog5.core.models import Archive, Category
from django.views.generic import list_detail, date_based


def index(request):
    posts = Archive.objects.all()
    return render_to_response('index.html', {'posts': posts})

def info(request, post_id):
    post = get_object_or_404(Archive, id=post_id)
    return list_detail.object_detail(
        request,
        template_object_name='post',
        template_name='info.html',
        object_id=post_id,
        queryset=Archive.objects.all(),
        )

def cate(request, category_id):
    category = get_object_or_404(Category, id=category_id)
    queryset=category.archive_set.filter()
    return list_detail.object_list(
        request,
        template_object_name='posts',
        template_name='cate.html',
        queryset=queryset,
        #object_id=category_id,
        paginate_by=5,
        #extra_context={u'分类'+category.name}
        )

这是urls.py

from django.conf.urls.defaults import patterns, include, url

# Uncomment the next two lines to enable the admin:
from blog5.core.views import index
from django.contrib import admin
admin.autodiscover()

urlpatterns = patterns('',
    # Examples:
    # url(r'^$', 'blog5.views.home', name='home'),
    # url(r'^blog5/', include('blog5.foo.urls')),

    # Uncomment the admin/doc line below to enable admin documentation:
    # url(r'^admin/doc/', include('django.contrib.admindocs.urls')),

    # Uncomment the next line to enable the admin:
    url(r'^admin/', include(admin.site.urls)),
    url(r'^list/(?P<post_id>\d+)/$', 'blog5.core.views.info', name='listurl'),
    url(r'^$', index),
    url(r'^cate/(?P<category_id>\d+)/$', 'blog5.core.views.cate'),
)

这是模板文件：
templates/info.html

{% block title %} 高青信息首页 {% endblock %}
{% block content %}
<h2>{{ post.title }}</h2>
<p>发布时间:{{ post.pub_date|date:'Y-m-d H:i' }} 栏目分类:{{ post.category }}</p>
<p>{{ post.content }}</p>
{% endblock %}

templates/index.html

{% block title %} 高青信息首页 {% endblock %}
{% block content %}
{% for post in posts %}
<h2><a href='/list/{{post.id}}'>{{ post.title }}</a></h2>
<p>发布时间:{{ post.pub_date|date:'Y-m-d H:i' }} 栏目分类:<a href='/cate/{{category.id}}/'>{{ post.category }}</a></p>
<p>{{ post.content }}</p>
<p>分类：{% for category in category.archive_set.all %}<a href='#'>{{category}}</a>{% endfor %}</p>
{% endfor %}
{% endblock %}

templates/cate.html

{% block title %} 高青信息首页 {% endblock %}
{% block content %}
{% for post in posts %}
<h2>{{ post.title }}</h2>
<p>发布时间:{{ post.pub_date|date:'Y-m-d H:i' }} 栏目分类:{{ post.category }}</p>
<p>{{ post.content }}</p>
{% endfor %}
{% endblock %}

问题是：

我打开首页的时候那个栏目分类可以调用出来。但是里面的URL地址没有？这里面哪里有错？

我打开分类的时候比如：http://127.0.0.1:8000/cate/1 http://127.0.0.1:8000/cate/2这里面什么也调不出来。


这个是我自已写的。也没有什么教程。

我得是views 里的cate 函数写的有问题。
再一个是模板里的调用也有问题。

请问怎么改上面的代码。

让首页的栏目分类可以正常链接到分类目录里。
并在分类目录里可以正常显示当前目当里的所有的文章？