add sale_show_transaction, that make transaction really visible on sale order

sale_show_transaction/models/sale_order.py

@@ -0,0 +1,30 @@
+# Copyright 2022 Akretion (https://www.akretion.com).
+# @author Sébastien BEAU <sebastien.beau@akretion.com>
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import _, api, fields, models
+
+
+class SaleOrder(models.Model):
+    _inherit = 'sale.order'
+
+    main_acquirer_id = fields.Many2one(
+        'payment.acquirer',
+        'Acquirer',
+        compute="_compute_main_acquirer",
+        store=True)
+
+    @api.depends("transaction_ids.state")
+    def _compute_main_acquirer(self):
+        for record in self:
+            if len(record.transaction_ids.acquirer_id) > 1:
+                for state in ["done", "authorized", "pending", "draft", "cancel", "error"]:
+                    transaction = record.transaction_ids.filtered(lambda s: s.state == state)
+                    if len(transaction.acquirer_id) > 1:
+                        transaction.sorted("amount")
+                    if transaction:
+                        record.main_acquirer_id = transaction[0].acquirer_id
+                        break
+            else:
+                record.main_acquirer_id = record.transaction_ids.acquirer_id
+