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RSS feed with content:encoded elements

Author:
philgyford
Posted:
September 21, 2010
Language:
Python
Version:
1.2
Score:
2 (after 2 ratings)

This creates an RSS feed that has "content:encoded" elements for each item in the feed.

The "description" is best used for a brief summary of the entry, while the extra "content:encoded" element is designed for the entire contents of something.

This is the code I'm using for a weblog app. The main features you'd need to copy to add "content:encoded" elements to your own feed are:

  • ExtendedRSSFeed() -- this is used to create a new kind of feed generator class that will know about these extra elements.
  • feed_type = ExtendedRSSFeed -- we tell the feed class which feed generator class to use.
  • item_extra_kwargs() -- we add the "content:encoded" element to each item. This populates the element by calling...
  • item_content_encoded() -- this prepares the actual content. The name doesn't have to be in this format, but it seemed sensible to follow convention. The body of my weblog Entries are split into two parts and here it makes sure we add both parts, both of which contain HTML (which the syndication classes will encode appropriately.
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from django.contrib.syndication.views import Feed
from django.utils.feedgenerator import Rss201rev2Feed
from django.shortcuts import get_object_or_404
from weblog.models import Blog,Entry


class ExtendedRSSFeed(Rss201rev2Feed):
    """
    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 LatestEntriesFeed(Feed):

    feed_type = ExtendedRSSFeed

    def get_object(self, request, blog_slug):
        return get_object_or_404(Blog, slug=blog_slug)

    # Elements for the top-level, channel.
    
    def title(self, obj):
        return obj.name

    def link(self, obj):
        return obj.get_absolute_url()

    def description(self, obj):
        return obj.description


    def items(self):
        return Entry.live.all()[:5]

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


    # Elements for each item.
    
    def item_title(self, item):
        return item.title

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

    def item_author_name(self, item):
        if (item.author.get_full_name()):
            return item.author.get_full_name()
        else:
            return item.author

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

    def item_content_encoded(self, item):
        content = item.body_html
        if (item.body_more_html):
            content += item.body_more_html
        return content

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