Often your application will want to track who created and updated your data.
On a previous rails 2 project I used a plugin called userstamp which worked well, but until recently it did not support rails 3+
I didn’t find any other gems out there at the time, so I put together the clerk gem,
you can install it as a gem in your rails 3+ applications by adding gem ‘clerk’ to your Gemfile, see the README on github for details
NOTE: the current version relies on your database tables having columns named created_by_id and updated_by_id and the gem does not support any custom configuration.