关于urls路由在html上的调用困扰
参考文章
1—>http://huacnlee.com/blog/django-url-routes-and-get-absolute-url/
- django文档
- https://docs.djangoproject.com/en/dev/ref/models/instances/?from=olddocs#get-absolute-url
- https://docs.djangoproject.com/en/dev/topics/http/urls/#topics-http-urls
- 常规的Templates里调用url地址
{% url apps.views.post post.user.slug,post.id %}或者 在url中加一个参数定义url名字调用url.py
但是Template里面会用到很多,如果当参数有变动的时候,重构将会是很麻烦的事情。所以我需要调用一个固定的地方。Django 的 Model 里面有一个 get_absolute_url()的方法,这个东西是定义Model的对象的查看地址,主要是用在RSS与后台查看页面的,以前看RSS的文档里面的写法是直接组合URL地址,但urls.py我们又定义了url的格式,这样在项目中就出现了两处关于这个页面的url配置,这样的以后做修改的时候就会有可能出现遗漏。所以我们需要想办法当url的配置终一化,urls.py 是被 Django 定义为url定义的,理所当然关于 url 的配置就应当写在这里,哪么 models 里面的 get_absolute_url() 怎么得到 urls.py 里面的定义呢?
下面是网上找的解决办法
- urls.py
# -*- coding: utf-8 -*-
from django.conf.urls.defaults import *
from django.contrib import admin
admin.autodiscover()
urlpatterns = patterns('',
# Home:
(r'^$','apps.views.home'),
url(r'^post/(?P<slug>[a-zA-Z0-9_\-]+)[/]{0,1}$','apps.views.post',name='post_view'),
# Admin:
(r'^admin/r/', include('django.conf.urls.shortcut')),
(r'^admin/(.*)',admin.site.root),
# Other:
(r'^static/(.*)','django.views.static.serve', {'document_root': './static/'}),
)
- models.py
# -*- coding: utf-8 -*-
from django.db import models,connection
from django.contrib import admin
from django.core.urlresolvers import reverse
class Post(models.Model):
title = models.CharField('标题',max_length=200)
slug = models.CharField('slug',max_length=255,blank=True)
summary = models.TextField('摘要',blank=True)
body = models.TextField('正文')
def get_absolute_url(self):
return reverse('post_view',args=[self.slug])
- views.py
# -*- coding: utf-8 -*-
from django.http import HttpResponse,Http404, HttpResponseRedirect, HttpResponseServerError
from django.template import Context, loader
from django.shortcuts import get_object_or_404
def post(request,slug):
post = None
try:
post = Post.objects.get(slug = slug)
except:
return Http404()
data = {
'post' : post,
}
template = loader.get_template('post.html')
context = Context(data)
output = template.render(context)
return HttpResponse(output)
- templates/post.html
<div class="post">
<h1>{{ post.title }}</h1>
<div class="url">URL:{{ post.get_absolute_url }}</div>
<div class="summary">
{{ post.summary }}
</div>
</div>