给Python的Django框架下搭建的BLOG添加RSS功能的教程

前些天有位网友建议我在博客中添加RSS订阅功能，觉得挺好，所以自己抽空看了一下如何在Django中添加RSS功能，发现使用Django中的syndication feed framework很容易实现。

具体实现步骤和代码如下：

1、Feed类

    # -*- coding: utf-8 -*-
    from django.conf import settings
    from django.contrib.syndication.views import Feed
    from django.utils.feedgenerator import Rss201rev2Feed

    from blog.models import Article
    from .constants import SYNC_STATUS


    class ExtendedRSSFeed(Rss201rev2Feed):
     mime_type = 'application/xml'
     """
     Create a type of RSS feed that has content:encoded elements.
     """
     def root_attributes(self):
      attrs = super(ExtendedRSSFeed, self).root_attributes()
      attrs['xmlns:content'] = 'http://purl.org/rss/1.0/modules/content/'
      return attrs

     def add_item_elements(self, handler, item):
      super(ExtendedRSSFeed, self).add_item_elements(handler, item)
      handler.addQuickElement(u'content:encoded', item['content_encoded'])


    class LatestArticleFeed(Feed):
     feed_type = ExtendedRSSFeed

     title = settings.WEBSITE_NAME
     link = settings.WEBSITE_URL
     author = settings.WEBSITE_NAME
     description = settings.WEBSITE_DESC + u"关注python、django、vim、linux、web开发和互联网"

     def items(self):
      return Article.objects.filter(hided=False, published=True, sync_status=SYNC_STATUS.SYNCED).order_by('-publish_date')[:10]

     def item_extra_kwargs(self, item):
      return {'content_encoded': self.item_content_encoded(item)}

     def item_title(self, item):
      return item.title

     # item_link is only needed if NewsItem has no get_absolute_url method.
     def item_link(self, item):
      return '/article/%s/' % item.slug

     def item_description(self, item):
      return item.description

     def item_author_name(self, item):
      return item.creator.get_full_name()

     def item_pubdate(self, item):
      return item.publish_date

     def item_content_encoded(self, item):
      return item.content

2、URL配置

    from django import VERSION

    if VERSION[0: 2] > (1, 3):
     from django.conf.urls import patterns, include, url
    else:
     from django.conf.urls.defaults import patterns, include, url
    from .feeds import LatestArticleFeed


    urlpatterns = patterns(
     '',
     url(r'^feed/$', LatestArticleFeed()),
    )