Attachment_fu db storage and undefined method full_filename


I use attachement_fu and in_place_editor to inline edit a
description field in my database.

Esiting fails with:

undefined local variable or method full_filename

I read about that full_filename is only set when you use
attachment_fu and filesystem storage, but thats not suitable in my

Is there a workaround to you in_place_editor in this case?