xml.instruct! :xml, version: '1.0' xml.rss version: “2.0”, :“xmlns:atom” => “www.w3.org/2005/Atom” do

xml.channel do
  xml.tag! "atom:link", href: "http://#{request.host}/api/cards.xml?#{request.env['QUERY_STRING']}", rel: "self", type: "application/rss+xml"
  xml.title config['title']
  xml.description config['description']
  xml.link "http://#{request.host}/"
  @cards.each do |card|
    xml.item do
      xml.title(card.title)
      xml.description markdown2html(card.content)
      xml.link("http://#{request.host}/#/#{URI.escape(card.title)}")
      xml.pubDate card.updated_at.rfc822
      xml.guid({isPermaLink: false}, "http://#{request.host}/#/#{URI.escape(card.title)}##{card.updated_at.to_i}")
    end
  end
end

end