Sale orderline Cost(Price Unit) not Updating with a custom code why?

Question

class SaleOrderLine(models.Model):
_inherit = 'sale.order.line'
@api.multi
@api.onchange('product_id')
def product_id_change(self):
res = super(SaleOrderLine, self).product_id_change()
self.product_code=self.product_id.barcode
self.product_code_details=self.product_id.product_code
self.product_brand_line=self.product_id.brand
self.price_unit=self.order_id.partner_id.cost*self.product_id.list_price#This is not updating
print('RESSSSSSSSSS',self.price_unit)
return res

Palkesh Baraiya · Accepted Answer

Hello,
You Can Try This, May be It Will Help You.
print 'res'. Find your Field and Update that one. You Need To Update 'res' so Update res Dictionary, than your Problem was Solved.
res.update({ 'price_unit' : self.order_id.partner_id.cost * self.product_id.list_price})

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