How (or where) do I place a trigger to run script after a portal record has been updated?
You could do a trigger on exit from the fields in the portal. Right click on the field in layout mod and select Set Script Trigger to set the trigger
Thank you, I did not know about the right click. I'll check it shortly but I'm sure that it will work.
You can right click on the portal itself and set an OnObjectExit script trigger. Please note that this trigger runs before the event that triggers it - ie. if you click into the next portal row to go to it, the script runs before going to the next portal row and can revert the row you are coming from if you wish.
Thanks for your variation and comment.
I'm not sure about your meaning "update", but portal records are not saved until parent record is committed. This is onRecordCommit on the layout.
But if you mean change of portal records editted by another user, there may be no trigger for it.
Retrieving data ...