[eluser]OverZealous[/eluser]
[quote author="introvert" date="1273460282"]I want to update "updated" field when I update the relationship objects.
DM OZ seems not to do that, although I set updated to "" (updated = "") and call save(); function.[/quote]
As you noted, updated only changes when the object itself has changed. There's no supported way to change this behavior.
One possible way, though, is to create an extra database column (like an int), and then override the save() function to increment this column whenever save() is called with an object.
