Hello,

How would I inherit the _get_commitment_date function? Do the parameters need to be the same or what? I've tried every variation, not sure what I am missing here. (odoo9e)

Original:

class sale_order_dates(osv.osv):
    """Add several date fields to Sale Orders, computed or user-entered"""
    _inherit = 'sale.order'
 def _get_commitment_date(self, cr, uid, ids, name, arg, context=None):
        """Compute the commitment date"""
        res = {}
        dates_list = []
        for order in self.browse(cr, uid, ids, context=context):
            dates_list = []
            order_datetime = datetime.strptime(order.date_order, DEFAULT_SERVER_DATETIME_FORMAT)
            for line in order.order_line:
                if line.state == 'cancel':
                    continue
                dt = order_datetime + timedelta(days=line.customer_lead or 0.0)
                dt_s = dt.strftime(DEFAULT_SERVER_DATETIME_FORMAT)
                dates_list.append(dt_s)
            if dates_list:
                res[order.id] = min(dates_list)
        return res

My test function (which does not do anything):

class test_sale_order(models.Model):    
_inherit = 'sale.order'    
@api.model    
def _get_commitment_date(self, cr, uid, ids, name, arg, context=None):