rails/rails — pull request #8123 by bcardarella (2012-11-05 23:37:44+00:00)
Title: Attach ConfirmationValidator to proper attribute

This is a follow up to fcc534e

This patch will attach the ConfirmationValidator to the _confirmation
attribute instead of the original attribute. I believe this should be
the preferred method instead of faking the desired behavior by just
rendering to the error message to the _confirmation attribute.