brentd/xray-rails — pull request #33 by mbrictson (2014-01-02 22:03:31+00:00)
Title: Gracefully handle nil for request_info[:controller]

When previewing a mailer view template using the [mail_view](https://github.com/37signals/mail_view) gem (version 2.0.4), `Xray.request_info[:controller]` is nil. Use `fetch` to accommodate this scenario.