I'm wondering whether some sort of Ajax-enabled sorting is supposed to be possible for tables within the CMS. This thread (http://www.silverstripe.com/site-builders-forum/flat/8856) mentions something similar...and I'm looking for something along the same lines.

I finally got my complextablefield working, and I'm able to sort the displayed info through the template using this:
function ActiveReps() {
return $this->getComponents('Reps', "ID", "Composer ASC");

but I need the table in the actual CMS to be organized alphabetically (by the first field, "Composer."

What file(s) should I edit to accomplish this? thank you!