config.ru

# vim:set filetype=ruby:
begin
  require ::File.expand_path('.bundle/environment', __FILE__)
rescue LoadError
  require 'rubygems'
  require 'bundler'
  Bundler.setup
end

require 'merb-core'
require 'warden'
Merb::Config.setup(:merb_root   => ::File.expand_path(::File.dirname(__FILE__)),
                   :environment => ENV['RACK_ENV'])
Merb::BootLoader.run 

# use PathPrefix Middleware if :path_prefix is set in Merb::Config
if prefix = ::Merb::Config[:path_prefix]
  use Merb::Rack::PathPrefix, prefix
end

use Rack::Session::Cookie

use Warden::Manager do |manager|
  manager.default_strategies :password
  manager.failure_app = Proc.new { [200, nil, 'Auth with warden failed.'] }
end

Warden::Manager.serialize_into_session do |user|
  user.id
end

Warden::Manager.serialize_from_session do |id|
  # User.get(id)
end

# comment this out if you are running merb behind a load balancer
# that serves static files
use Merb::Rack::Static, Merb.dir_for(:public)

run Merb::Rack::Application.new

controller.rb

class Landing < Application

  def env
    request.env
  end

  def registered
    params[:view] = params[:view] || 'favourites'
    render
  end

  def unregistered
    render
  end
end