I have custom field named as 'code'  in res.partner

        class cust_partner

         _inherit = 'res.partner'

         _columns = { 'code': fields.char('Code', index=True), }

Customized name_get , name_search methods to get code instead of Customer name

it works only in Search and display name in field

In my custom class

        class test_order(osv.Model):
        _inherit = 'test_order'_columns = {   'customer_code': fields.many2one('res.partner', 'Code', ondelete='restrict',required=False),}

My expected output is in test_order class i need to display value of  'code' instead of name in field customer_code (after save in form view )

Please anyone help me to resolve this