rails 讓使用者可以訂閱 RSS

使用者可以訂閱 RSS http://stackoverflow.com/questions/3951235/how-do-i-make-an-rss-atom-feed-in-rails-3

http://techoctave.com/c7/posts/32-create-an-rss-feed-in-rails

1.在LinksController 

def feed

  @links = Link.all(:select => "title, url, id, description, updated_at", :order                  => "updated_at DESC", :limit => 20) 



  respond_to do |format|

     format.html

     format.rss { render :layout => false }

  end

end

2.新增app/view/links/feed.rss.builder

xml.instruct! :xml, :version => "1.0" 

xml.rss :version => "2.0" do

  xml.channel do

    xml.title "learn rails"

    xml.description "study"

    xml.link links_url



    for link in @links

      xml.item do

        xml.id link.id

        xml.title link.title

        xml.description link.description

        xml.pubDate link.updated_at.to_s(:rfc822)

        xml.link link.url

      end

    end

  end

end

3.html連結

<%= link_to("rss" , feed_links_path(rss))%>

如此 即可產生一可讓使用者訂閱之rss