Example of atom feed creator

gistfile1.rb

def entry(record, options = {})
  @xml.entry do
    @xml.id(options[:id] || "tag:#{@view.request.host},#{@feed_options[:schema_date]}:#{record.class}/#{record.id}")

    if options[:published] || (record.respond_to?(:created_at) && record.created_at)
      @xml.published((options[:published] || record.created_at).xmlschema)
    end

    if options[:updated] || (record.respond_to?(:updated_at) && record.updated_at)
      @xml.updated((options[:updated] || record.updated_at).xmlschema)
    end

    @xml.link(:rel => 'alternate', :type => 'text/html', :href => options[:url] || @view.polymorphic_url(record))

    yield AtomBuilder.new(@xml)
  end
end