计算python

Question

[@ api.depends（'rel_id'）

def payment_amount(self):


    for rec in self:


        if (rec.rel_id.amount < rec.amount_paid):
            raise ValidationError('Please enter correct amount')

        elif (rec.rel_id.amount > rec.amount_paid):
            rec.remaining_amount = rec.rel_id.amount - rec.amount_paid]

剩余金额的第二项。应通过减少以前的剩余金额但减少到期金额来减少金额。