# Copyright 2019 Camptocamp SA # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl) from odoo import models, fields, api class SaleOrder(models.Model): _inherit = 'sale.order' transaction_id = fields.Char( 'Transaction ID', required=False, copy=False, help="Transaction id from the financial institute" ) @api.multi def _prepare_invoice(self): """Propagate the transaction_id from the sale order to the invoice.""" invoice_vals = super()._prepare_invoice() invoice_vals['transaction_id'] = self.transaction_id return invoice_vals