Rails, How to integrate this module -

i'm working add fb registration plugin app. way works plugin posts 1 param, params["signed_request"] needs decoded app.

i found tutorial: http://veerasundaravel.wordpress.com/2011/01/27/facebook-registration-plugin-in-rails/

my question module live? , access in controller's def create method recieves params["signed_request"] ?

thanks

create 1 ruby file inside lib folder , put module code inside file. next have autoload module add below line in config/application.rb

config.autoload_paths += %w(#{config.root}/lib) 

restart server. can access module inside controller.