Best Rails One Liner for Debugging

Please note that all opinions are that of the author.

Last Updated On: 2026-02-15 08:01:34 -0500

How many times have all of us left this in our code bases:

debugger

Here’s my new favorite convention:

debugger unless Rails.env.production?

That will work in development or test mode but will not execute in production. Perfection. And a great example of “unless” which I normally have problems using.