Gemfile.rb

gem "resque", :require => "resque/server"

resque.rb

class Authentication
  def initialize(app)
    @app = app
  end
  
  def call(env)
    env['warden'].authenticate!(:database_authenticatable, :rememberable, :scope => :admin)
    @app.call(env)
  end
end

Resque::Server.use Authentication

routes.rb

mount Resque::Server.new, :at => "/resque"

routes_2.rb

authenticate :admin do
  mount Resque::Server.new, :at => "/resque"
end