rails--rails/railties/builtin/controllers/rails_info_controller.rb

module Controllers #:nodoc:
  class RailsInfoController < ApplicationController
    def properties
      if local_request?
        render :inline => Rails::Info.to_html
      else
        render :text => '<p>For security purposes, this information is only available to local requests.</p>', :status => 500
      end
    end
  end
end