yuml_tweets.rb

#
# Simple way of grabbing tweets for Rails
# http://tobin@tobinharris.com
# Example on the home page of http://yuml.me
#
require 'rexml/document'
require 'open-uri'
include REXML

class TwitterController < ApplicationController
  
  def tweets     
      unless fragment_exist?("tweets", :time_to_live=>10.minutes)
        # search for yUML but don't show RTs and tweets from @yuml
        url = 'http://search.twitter.com/search.atom?q=yuml+-RT+-%40yuml+-from:yuml'
        @doc = Document.new(open(url, "UserAgent" => "Ruby-Twitter Reader").read)   
  
        @tweets = [] 

        # convert result into neat Hash
        REXML::XPath.each(@doc.root, '//entry') do |entry|
          @tweets << {:title=>entry.elements['content'].text, :link=>entry.elements['link'].attributes['href'], :author=>entry.elements['author'].elements['name'].text, :published=>entry.elements['published'].text.to_time  }       
        end         
      end                                                     
  end
end