controller - Creating a RSS feed with Rails -

i'm trying create rss feed news posts, i've googled , come code:

def feed   @posts = news.all(:conditions => "#{settings.show} = 1", :select => "id, title, heading, content, date_posted", :order => "date_posted desc")     respond_to |format|     format.rss { render :layout => false }   end end 

then in file called "feed.rss.builder" have this:

xml.instruct! :xml, :version => "1.0"  xml.rss :version => "2.0"   xml.channel     xml.title "your blog title"     xml.description "a blog software , chocolate"     xml.link posts_url      post in @posts       xml.item         xml.title post.title         xml.description post.content         xml.pubdate post.date_posted.to_s(:rfc822)         xml.link post_url(post)         xml.guid post_url(post)        end     end   end end 

i've added routes file match "/news/feed" => "aboutus#feed" when go page nothing rendered..

this code ended with:

def news  @news = news.find(:all, :order => "date_posted desc", :conditions => "#{settings.show} = 1") render :template => 'about-us/news/feed.rss.builder', :layout => false  end 

and:

xml.instruct! :xml, :version => "1.0"  xml.rss :version => "2.0"   xml.channel     xml.title "news"     xml.description "description"     xml.link "/news"  post in @news   xml.item     xml.title post.title     xml.description post.content     xml.pubdate post.date_posted.to_s(:rfc822)     xml.link "/news/#{post.reference}"     xml.guid "/news/#{post.reference}"     xml.icon "/favicon.ico"    end end end end