Hi,
i'm trying to customize code of sale_order,
some field value is not updating.

i'm try to inherit base field (amount_untaxed).
and try to update it.
i'm using this code,

@api.depends('order_line.product_uom_qty','order_line.price_total')

def compute_discount(self):

import pdb;pdb.set_trace()

total_order_qty=0

sale_order_line=self.env['sale.order.line'].search([('order_id','=',self.id)])

for product_qty in sale_order_line:

total_order_qty+=product_qty.product_uom_qty

if(total_order_qty>=10 and total_order_qty<20):

applied_discount="10%"

extra_discount_amount=(self.amount_untaxed*10)/100

amount_untaxed=self.amount_untaxed-extra_discount_amount

print(applied_discount,extra_discount_amount,amount_untaxed)

values={

'amount_untaxed':amount_untaxed,

'extra_discount_amount':extra_discount_amount,

'applied_discount':applied_discount,

             }

self.update(values)

Thanks