source/app/views/rss/list.rxml

records = (@versions + @comments + @updates + @uploads).uniq
xml.instruct!
#xml.rss "version" => "2.0", "xmlns:dc" => "http://purl.org/dc/elements/1.1/" do
  xml.rss "version" => "2.0", "xmlns:atom" => "http://www.w3.org/2005/Atom" do
  scope = @wiki.title if @wiki
  scope = ENV['EPFWIKI_APP_NAME'] unless @wiki
  xml.channel do
    xml.title "#{scope}"
    if @wiki
      xml.link @wiki.url(true) 
      xml.atom:link, :href => "http://#{ENV['EPFWIKI_HOST']}/rss/#{@wiki.folder}", :rel => 'self', :type => 'application/rss+xml'      
    else
      xml.link "http://#{ENV['EPFWIKI_HOST']}/rss/all"
      xml.atom:link, :href => "http://#{ENV['EPFWIKI_HOST']}/rss/all", :rel => 'self', :type => 'application/rss+xml'      
    end
    if records.size > 0
      xml.pubDate CGI.rfc1123_date(records.first.created_on.gmtime) 
    else
      xml.pubDate CGI.rfc1123_date(Time.now.gmtime) 
    end
    xml.description h("News, changes, comments, baseline updates in #{scope}")
    records.sort_by{|record| [record.created_on]}.reverse.each do |record| # can sort on more columns but we have the baseline_updated_on column
      xml.item do
        logger.debug("RSS item for #{record.class.to_s} with ID #{record.id}")
        if record.class.name == 'UserVersion'
          version = record
          xml.guid "Version#{version.id.to_s}", :isPermaLink => false
          xml.title "#{version.user.name} changed '#{version.page.presentation_name}'"
          xml.link version.page.url(true)
          xml.description version.note
          xml.pubDate CGI.rfc1123_date(version.created_on.gmtime)
          xml.dc_creator h(version.user.name)
        elsif record.class.name == 'Upload'
          upload = record
          xml.guid "Upload#{upload.id.to_s}", :isPermaLink => false
          xml.title "#{upload.user.name} uploaded #{upload.filename}"
          xml.link upload.url(true)
          xml.description "#{upload.description}"
          xml.pubDate CGI.rfc1123_date(upload.created_on.gmtime)
          xml.dc_creator h(upload.user.name)
        elsif record.class.name == 'Comment'
          comment = record
          xml.guid "Comment#{comment.id.to_s}", :isPermaLink => false
          xml.title "#{comment.user.name} discussed '#{comment.page.presentation_name}'"
          xml.link comment.page.url(true)
          xml.description "#{comment.text}"
          xml.pubDate CGI.rfc1123_date(comment.created_on.gmtime)
          xml.dc_creator h(comment.user.name)
        elsif record.class.name == 'Update'
          update = record
          wiki = update.wiki
          xml.link wiki.url(true)
          xml.pubDate CGI.rfc1123_date(wiki.created_on.gmtime)
          xml.dc_creator h(@cadmin.name) 
          if update.first_update?
            xml.title "#{wiki.title} created!"
            xml.description h("A new Wiki with title \"#{wiki.title}\" was created")
            xml.guid "WikiCreated#{wiki.id.to_s}", :isPermaLink => false
          else
            xml.title "#{wiki.title} updated!"
            xml.description "Wiki #{wiki.title} was updated with baseline #{wiki.baseline_process.title}"
            xml.guid "WikiUpdated#{wiki.id.to_s}_#{update.id.to_s}", :isPermaLink => false
          end
        end
      end
    end
  end
end