ruby.rb

    get '/thankyou' do
      param_branding_url = params['brandingUrl']

      view(:no_session) do |session|
        data = {}
        data[:groups] = get_groups
        data[:branding_url] = param_branding_url
        ThankYou.new nil, nil
      end

      haml :thank_you, :layout => :layout_guest
    end