Jim Lindley Notes

Action Pack now includes a built in helper to create Atom formatted feeds for resources. (Docs)

In your controller action:

def index
  @pages = Page.find(:all, :include => :author)
  respond_to do |format|
    format.html
    format.atom
  end
end

In your index.atom.builder file:

atom_feed do |feed|
  feed.title "My Entries"
  feed.updated @pages.first.created_at
  for page in @entries
    feed.entry(page) do |entry|
      entry.title   page.title
      entry.content page.body, :type => 'html'
      entry.author do |author|
        author.name page.author.name
      end
    end
  end
end

Now, the important part of this helper is that if you are passing it a resource to generate a feed for, it can build the links and other elements of the feed implicitly, so you only need to worry about the more important elements like titles and content.

Changeset #7529