andersonfreitas/has_audit_trail — pull request #1 by Saicheg (2012-09-06 09:36:02+00:00)
Title: Let has_audit_trail use column_names instead using attribute_names

I got an ```NoMethodError``` trying to use ```has_audit_trail``` without a params. I am not sure if it's my old Rails 3.0.7 issue or what, but ```column_names``` looks like exactly what we need here.