Rails (3.0.x): request.ssl? isn't working -- monkey patch

rails_app_ssl_monkey_patch.rb

class Application < Rails::Application

  # MONKEY PATCH
  #
  # Calls to request.ssl? aren't working. The ssl? method relies on some environment variable(s)
  # to be set and doesn't take into account the 'rack.url_scheme'. See ticket #5750 on the Rails
  # lighthouseapp.com ticketing site.
  # url: https://rails.lighthouseapp.com/projects/8994-ruby-on-rails/tickets/5750-requestssl-should-reflect-rackurl_scheme

  def call(env)
    env['HTTPS'] = 'on' if env['rack.url_scheme'] == 'https'
    super
  end
end