I wanna to create a warning message when we create or save object but don't block this action mean you can save or create object.
I have try:
1) use cr.commit() and raise message but it raise message and object save but it seem block to user interface.
2) Call onchange but it don't work.
Any solution for this situation? Thank for support.
http://help.openerp.com/question/16015/using-raise-osvexcept_osv/