dwradcliffe/omniauth-ldap — pull request #1 by jlberglund (2012-10-05 18:39:00+00:00)
Title: Failing with Missing Credentials

I wanted to use the failure settings in my omniauth config to determine what happened after the MissingCredentialsError was raised. I'm not sure if this is the best approach, but it roughly follows the OAuth strategies callback phase method.