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categories.html＃这就是我想被CategoryView.as_view()调用的那种从不起作用的东西。如何index.html工作，但我已经在index.html中如下硬编码链接。尽管index.html扩展了base.html，它是输出url的地方。 编辑：避免混淆，这是在我的猜测应该工作，但是从我的根目录现在Page not found (404)尽管我努力学习Django模板，但它仍然令人失望
<li><a href="{% url 'all_categories' %}">All</a></li>
显示指数以下错误index.html的模板可当我键入http://127.0.0.1:8000它的工作原理，但我想要的东西像这样http://127.0.0.1:8000/cartegories/（index.html或categories.html）我认为index.html或categories.html在输入时不可见，这很好。
我不能相信这是带我12小时，所有可能的直观调整仍然无法让它工作。请有人建议做错了什么。在essense我只是outputing hellow世界categories.html但以后我会遍历并列出所有类别在我的博客...如果hello world不能工作，那么什么都不会..
#posts urls.py
from django.conf.urls import include, url
from django.contrib import admin
from .views import IndexView, CategoryView
urlpatterns = [
url(r'^$', IndexView.as_view(), name='index'),
url(r'^all_categories$', CategoryView.as_view(), name='all_categories'),
# stuff i have tried
]
#admin urls.py
from django.conf.urls import include, url
from django.contrib import admin
urlpatterns = [
url(r'^/', include('posts.urls', namespace="posts")),
url(r'^admin/', include(admin.site.urls)),
]
#views.py
from django.shortcuts import render
from .models import Post, Comment, Category, Reply
from django.views import generic
class IndexView(generic.ListView):
template_name = 'posts/index.html'
context_object_name = 'posts'
model = Post
def get_context_data(self, **kwargs):
context = super(IndexView, self).get_context_data(**kwargs)
context['categories'] = Category.objects.all()
return context
class CategoryView(generic.ListView):
template_name = 'posts/categories.html'
context_object_name = 'categories'
model = Category
#modesl.py
class Category(models.Model):
category_name = models.CharField(max_length=200)
class Meta:
verbose_name_plural = "categories"
def __str__(self):
return self.category_name
def get_absolute_url(self):
return reverse('all_categories')
class Post(models.Model):
title = models.CharField(max_length=200)
…
category = models.ForeignKey(Category)
def save(self, *args, **kargs):
if not self.id:
self.slug = slugify(self.title)
super(Post, self).save(*args, **kargs)
def __str__(self):
return self.title