may i use cr.exucte(query) in this method??

i tried this ` def default_get(self,cr,uid,ids,context=None): print 'new function'` but it removed all fields on my form... I can see labels only

Saghir, it is always adviseable if you inherit ORM standard method (default_get is one of them) to return what the super is returning. So, you can add super(class_name, self).default_get(cr, uid, ids, context=context) as your last line in the default_get method that you have overriden. Yes, you can execute query in that method, but why are you not using ORM method (search) instead?

default_get() is an ORM function. If you re-define it, you need to add a super() call. So, res = super(some_class, self).default_get(cr, uid, ids, context=context). Then parse out res and append your changes. The arguments in default_get() aren't quite right either. Check the technical memento, page 4, for more explanation on ORM functions: https://www.odoo.com/files/memento/OpenERP_Technical_Memento_latest.pdf Or better yet, just look at orm.py, those main functions have more info commented into them.