[SQLObject] Having a many to many relation as a Set

[Helio MC P. <hel...@gm...>]

Hi all,

   I have a problem related with many-to-many relation. Have searched
in this list and see that my problem is the same in this thread:
http://sourceforge.net/mailarchive/forum.php?thread_id=3D9049958&forum_id=
=3D30269

"""
>>> foo =3D User(username=3D"foo")
>>> admin =3D Role(name=3D"admin")
>>> foo.addRole(admin)
>>> foo.roles
[admin]
>>> foo.addRole(admin)
[admin, admin]   <----- Duplicate !!!!
"""

   Can anyone point me to another way of doing this?

Thanks,
Helio Pereira