Hello

I am working  on loan limitation, the function must do the following:

if the employee requests a loan less than the limitation, a new limitation must be calculated by subtracting the loan amount.

if an employee requests another loan, the limitation must equal the new limitation - the sum of the loan amount.

here's my code:

limit = fields.Float('limitation',compute='_check_contract_limitation')
@api.onchange('loan_amount', 'employee_id','limit')
def _check_contract_limitation(self):
    for rec in self:
        #hr_contract = self.env['hr.contract'].search([('employee_id.name', '=', self.employee_id.name)], limit=1)
        if not rec.employee_id.contract_id:
            raise ValidationError("you dont have contract record.")
        elif rec.employee_id.contract_id:
            rec.limit = rec.employee_id.contract_id.wage
            # rec.a = hr_contract.date_start
            if rec.employee_id.contract_id.date_start:
                fmt = '%Y-%m-%d'
                d1 = rec.employee_id.contract_id.date_start
                d2 = datetime.datetime.now().date()
                r = relativedelta.relativedelta(d2, d1)
                contract_time = r.years
                rec.a = contract_time
                if contract_time == None:
                    raise ValidationError("check contract duration.")
                else:
                    if contract_time >= 5:

                        rec.limit = rec.employee_id.contract_id.wage * 5 - rec.loan_amount
                        if rec.loan_amount > rec.limit:
                            rec.loan_amount = False
                            raise ValidationError("please correct loan amount is greater than limitaion.")
                            return

                    elif contract_time >= 0 and contract_time < 5:
                        rec.limit = rec.employee_id.contract_id.wage * contract_time - rec.loan_amount
                        if rec.loan_amount > rec.limit:
                            rec.loan_amount = False
                            raise ValidationError("please correct loan amount is greater than limitaion.")
                            return