Workflow conditional post funtion

[Todd Winton]

We have recently been asked to report on when an issue enters the status in progress.  My initial thought is to have a post function set the start date based on the start progress transition.  However, if you stop progress and start progress again, this would reset the date.  Is there a way to conditionally populate this field only if it is empty?  Or is there a better way to do this?

[Peter Bengov]

It might be useful to do the following - using Conditions together with Post Functions:

• Duplicate the specific transition you wanted to add a Post Function to.
• Set a condition for that copied transition based on JQL. Something like "start date" is not EMPTY. Making this transition show only when a ticket already started progress before. This transition won't have a post function to populate start date field. 
• The original transition will have the opposite transition, like "start date" is EMPTY. And will have a Post Function to populate start date field.
  

Hope it helps

[Nic Brough -Adaptavist-]

Yes, but no.

Post functions always run when the transition is executed, so "no"

But if you need to do this, you write the post function with it in mind - put something like "if date not empty, exit" at the top of the code for it.