How do I make an RSS/Atom feed in Rails 3?

Question

I'm pretty new to Rails 3, and I'm trying to make an RSS/Atom feed. I know about auto_discovery_link_tag, but what is the associated controller/action supposed to look like?

Thanks!

Answer 1

Auto_discovery_link_tag is a good start. A quick Google search and I found blog posts on How to Create an RSS feed in Rails. Let me fill you in on what your associated controller/action is supposed to look like:

controllers/posts_controller.rb

def feed     @posts = Post.all(:select => "title, author, id, content, posted_at", :order => "posted_at DESC", :limit => 20)       respond_to do |format|       format.html       format.rss { render :layout => false } #index.rss.builder     end end 

The name of this file should match the controller. See, below:

views/posts/feed.rss.builder

xml.instruct! :xml, :version => "1.0"  xml.rss :version => "2.0" do   xml.channel do     xml.title "Your Blog Title"     xml.description "A blog about software and chocolate"     xml.link posts_url      for post in @posts       xml.item do         xml.title post.title         xml.description post.content         xml.pubDate post.posted_at.to_s(:rfc822)         xml.link post_url(post)         xml.guid post_url(post)       end     end   end end 

This is where all the Railsy magic happens. Here, the RSS feed XML is generated and returned to HTTP.