gistfile1.rb

class App < Sinatra::Base
  include Jazzband

  get '/' do
    session['username'] = params['username']
    haml session['username'] ? :chat : :select_username
  end

  get '/send' do
    return 403 unless session['username']
    push_rbjs do
      jQuery('#messages').append haml :message
    end
  end

end