Have you ever sat there refreshing your browser wondering why your changes aren't showing up? Then it it hits you... you have been refreshing the production site, not your local dev site. Yeah, I've been there. ck_fu to the rescue!

ck_fu is a simple rails plugin which provides a helper to display some environment info in your browser. For more information, check out the repo on GitHub.


Shows a green bar.


Shows a blue bar with the date of the last deployment.


Nothing is shown in production if the user isn't logged in.

Shows a red bar with the date of the last deployment if the user is logged in and an admin.

an ümlatte LLC production