What is the most direct method of getting a user name from the user_id (or object_id) of a user account?
I need to do this because Norman Leutner's excellent topauthors extension gets authors who have contributed the most but it provides only the user_id (which appears to be the same as the object_id). I need to look up the actual name of the author but all the fetch examples use node_ids rather than object_ids.