159 lines
7.4 KiB
Python
159 lines
7.4 KiB
Python
# -*- coding: utf-8 -*-
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from odoo import models, fields, api, _
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from odoo.exceptions import ValidationError
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class AccountPayment(models.Model):
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_inherit = 'account.payment'
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# Flag to prevent infinite recursion during synchronization
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_skip_amount_sync = False
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amount_substract = fields.Monetary(
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string='Amount Substract',
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currency_field='currency_id',
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help='Amount to be deducted from the payment (e.g., withholding tax, fees)',
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readonly=False,
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)
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substract_account_id = fields.Many2one(
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'account.account',
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string='Substract Account',
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domain="[('account_type', 'not in', ['asset_cash', 'asset_cash_bank']), ('deprecated', '=', False), ('company_id', '=', company_id)]",
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help='Account where the deduction will be recorded',
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readonly=False,
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)
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final_payment_amount = fields.Monetary(
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string='Final Payment Amount',
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currency_field='currency_id',
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compute='_compute_final_payment_amount',
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store=True,
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help='Actual amount to be paid after deductions',
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)
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@api.depends('amount', 'amount_substract', 'currency_id')
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def _compute_final_payment_amount(self):
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for payment in self:
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amount_substract = payment.amount_substract or 0.0
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currency = payment.currency_id or payment.company_id.currency_id
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payment.final_payment_amount = currency.round(payment.amount - amount_substract)
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@api.constrains('amount', 'amount_substract')
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def _check_amount_substract(self):
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for payment in self:
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if payment.amount_substract and payment.amount_substract < 0:
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raise ValidationError(_("Amount Substract cannot be negative."))
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if payment.amount_substract and payment.amount_substract > payment.amount:
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raise ValidationError(_("Amount Substract cannot be greater than the payment amount."))
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@api.constrains('amount_substract', 'substract_account_id')
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def _check_substract_account(self):
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for payment in self:
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if payment.amount_substract > 0 and not payment.substract_account_id:
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raise ValidationError(_("Please select a Substract Account when Amount Substract is specified."))
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def _synchronize_from_moves(self, changed_fields):
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"""
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Override to prevent amount synchronization when we have a substract amount.
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When we have a substract amount, the bank credit line is reduced to final_payment_amount,
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but we want to keep the payment amount at the original value (not sync it down).
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"""
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# If we have a substract amount, we need to handle the sync differently
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if self.amount_substract and self.amount_substract > 0:
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# Store the original amount before sync
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original_amount = self.amount
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original_substract = self.amount_substract
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# Call parent sync
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result = super()._synchronize_from_moves(changed_fields)
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# Restore the original amount if it was changed by sync
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if self.amount != original_amount:
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# Use write to update without triggering another sync
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super(AccountPayment, self).write({
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'amount': original_amount,
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'amount_substract': original_substract,
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})
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# Force recomputation of final_payment_amount
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self._compute_final_payment_amount()
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return result
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else:
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return super()._synchronize_from_moves(changed_fields)
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def _prepare_move_line_default_vals(self, write_off_line_vals=None, force_balance=None):
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"""
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Override to add substract account line when amount_substract > 0.
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This method modifies the journal entry to:
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1. Keep the payable debit line at the original amount
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2. Add a new credit line for the substract account (reduction)
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3. Reduce the bank credit line to final_payment_amount
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The resulting entry for outbound payment (amount=1000, substract=100):
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- Payable: debit 1000 (original amount)
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- Substract: credit 100 (amount_substract - reduction)
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- Bank: credit 900 (final_payment_amount)
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Total: debit 1000 = credit 1000 (balanced)
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Requirements: 4.1, 4.2, 4.3, 4.4, 4.5
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"""
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# Get standard line values from parent
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line_vals_list = super()._prepare_move_line_default_vals(write_off_line_vals, force_balance)
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# Only modify if we have a deduction amount and account
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if self.amount_substract and self.amount_substract > 0 and self.substract_account_id:
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# For outbound payments, we need to:
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# - Keep the payable debit (counterpart line) at the original amount
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# - Add a credit line for the substract account (reduction)
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# - Reduce the bank credit (liquidity line) to final_payment_amount
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if self.payment_type == 'outbound':
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# Check if substract line already exists (to prevent duplicates)
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has_substract_line = any(
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line.get('account_id') == self.substract_account_id.id
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for line in line_vals_list
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)
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if not has_substract_line:
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# The liquidity line is the first line (index 0) - this is the bank account
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# The counterpart line is the second line (index 1) - this is the payable account
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liquidity_line = line_vals_list[0]
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# Convert amount_substract to company currency for the journal entry
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substract_balance = self.currency_id._convert(
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self.amount_substract,
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self.company_id.currency_id,
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self.company_id,
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self.date,
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)
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# Adjust the liquidity (bank) line - reduce the credit by amount_substract
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# For outbound payment:
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# - Original: amount_currency = -amount, credit = amount
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# - Modified: amount_currency = -final_payment_amount, credit = final_payment_amount
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liquidity_line['amount_currency'] += self.amount_substract # Reduce the negative amount (make it less negative)
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liquidity_line['credit'] -= substract_balance # Reduce the credit
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# Create the substract account line (credit - reduction)
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substract_line_name = _('Payment Deduction: %s') % self.substract_account_id.name
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substract_line = {
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'name': substract_line_name,
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'date_maturity': self.date,
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'amount_currency': -self.amount_substract, # Negative because it's a credit
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'currency_id': self.currency_id.id,
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'debit': 0.0,
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'credit': substract_balance,
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'partner_id': self.partner_id.id,
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'account_id': self.substract_account_id.id,
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}
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# Add the substract line to the list
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line_vals_list.append(substract_line)
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return line_vals_list
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