If brain is the same as obj, it's better to grab values using accessors, instead of reading brain attributes (this solves discrepancies between what a listbox displays and what the accessor computes on a document).
In the process, replace a hasattr by a getattr.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@20540 20353a03-c40f-0410-a6d1-a30d3c3de9de