Transition condition: restrict transition based on custom field value

Question

Hello, I have a custom field called "Code Reviewed" with a value of "Yes" or "No", defaulting to "No".  I want to prevent a transition from occuring based on the value of the custom field.  I don't want to hide the transition, but I don't want it to work until the "Code Reviewed" value is set to "Yes".

My pertinent workflow:

Status: Dev Completed
--- Transition: DEV Complete
Status: In QA

How can I add a condition to the "DEV Complete" transition that checks the value of my custom field and only allows the workflow to advance when "Code Reviewed" value is set to "Yes"?

Pete P_lbwqsx · Answer

Thanks for the suggestion, much appreciated :)

Josh Steckler · Answer

Yes retirement of custom fields is always a problem. Another thing you could try is to "disable" the No option on the custom field and remove the default so that the old data would remain, but you could implement the new behavior for future issues.

Pete P_lbwqsx · Answer

Thanks Josh, the only problem I have with your suggestion is that the Yes/No is already in production and we have hundreds of issues that already have a value "No".

I will see it I can get the workflow validator you mentioned to work with the yes/no control.