A simpe rack example

snippet.rb

# simple rack-example
# for more see    
# http://m.onkey.org/2008/11/17/ruby-on-rack-1
# and
# http://m.onkey.org/2008/11/18/ruby-on-rack-2-rack-builder

require 'rubygems'
require 'rack'

class HelloWorld
  def call(env)
    case env["REQUEST_PATH"]
    when "/"
      [200, {"Content-Type" => "text/html"}, 'index']
    when "/demo/goodby.php"
       [200, {"Content-Type" => "text/html"}, "goodby"]
    else
       [404, {"Content-Type" => "text/html"}, "Not found"]
    end
  end
end

Rack::Handler::Mongrel.run HelloWorld.new, :Port => 9292