我制作了一个自定义标签来显示类别列表及其网址,直到我制作了一个类别详细信息视图,该视图将仅显示基于类别的文章。
这是类别视图:
from blog.models import Category, Entry
from django.shortcuts import render_to_response, get_object_or_404
from django.views.generic import list_detail
#for template tag to display all categories
def all_categories(request):
return render_to_response('category_detail.html', {
'categories': Category.objects.all()
})
def category_detail(request, slug):
"""
object_list
List of posts specific to the given category.
category
Given category.
"""
return list_detail.object_list(
request,
queryset = Entry.objects.filter(categories = Category.objects.filter(slug = slug)),
extra_context = {'category': Category.objects.filter(slug = slug)},
template_name = 'blog/category_detail.html',
)
分类网址:
from django.conf.urls.defaults import *
from django.views.generic.list_detail import object_list, object_detail
from blog.views.category import category_detail
from blog.models import Category, Entry
# for category detail, include all entries that belong to the category
category_info = {
'queryset' : Category.objects.all(),
'template_object_name' : 'category',
'extra_context' : { 'entry_list' : Entry.objects.all }
}
urlpatterns = patterns('',
url(r'^$', 'django.views.generic.list_detail.object_list', {'queryset': Category.objects.all() }, 'blog_category_list'),
url(r'^(?P<slug>[-\w]+)/$', category_detail),
)
和自定义类别标签:
from django import template
from blog.models import Category
def do_all_categories(parser, token):
return AllCategoriesNode()
class AllCategoriesNode(template.Node):
def render(self, context):
context['all_categories'] = Category.objects.all()
return ''
register = template.Library()
register.tag('get_all_categories', do_all_categories)
这也是我在 base.html 中使用自定义标签的方式:
{% load blog_tags %}
<p>
{% get_all_categories %}
<ul>
{% for cat in all_categories %}
<li><a href="{{ cat.get_absolute_url }}">{{ cat.title }}</a></li>
{% endfor %}
</ul>
</p>
在视图中添加 category_detail 之前,自定义标签会正确显示 url,例如:/categories/news。但是,现在自定义标签中的所有链接都只显示您所在的 url 或当前页面。奇怪的是它正确显示了类别名称。
有谁知道如何让网址再次工作?
编辑
这是我的类别模型,也许我的 get_absolute_url() 有问题:
import datetime
from django.db import models
from django.contrib.auth.models import User
from django.db.models.signals import post_save
class Category(models.Model):
title = models.CharField(max_length = 100)
slug = models.SlugField(unique = True)
class Meta:
ordering = ['title']
verbose_name_plural = "Categories"
def __unicode__(self):
return self.title
@models.permalink
def get_absolute_url(self):
return ('category_detail', (), {'slug': self.slug })
编辑:更新了类别模型的 get_absolute_url,但是,这并没有解决我的问题。此外,如果我之前不清楚,类别 url 甚至在更改 get_absolute_url 之前就起作用了