barleysodas/app/views/beers/_beers.rxml

xml.instruct! :xml, :version=>"1.0" 
xml.rss(:version=>"2.0"){
  xml.channel{
    xml.title("BarleySodas Newest Beers")
    xml.link(beers_url)
    xml.description("The newest beers added into BarleySodas.")
    xml.lastBuildDate((@beers.first.created_at.strftime("%a, %d %b %Y %H:%M:%S %z") rescue nil))
    xml.language('en-us')
      for beer in @beers
        xml.item do
          xml.title(beer.title)
          xml.description(beer.brewery.title)
          xml.author(beer.page.created_by.title)
          xml.pubDate(beer.created_at.strftime("%a, %d %b %Y %H:%M:%S %z"))
          xml.link(brewery_beer_url(beer.brewery, beer))
          xml.guid(brewery_beer_url(beer.brewery, beer))
        end
      end
  }
}