[IMP] account_payment_partner: Make payment mode editable on entry

Complement of 998f8df6aa254266c015fab144ba290e1a386cf0

Extend the editability to the journal entry (account.move), taking
as criteria if there's no reconciliation made, which is the definitory
one.

It includes test for this new feature, both the mode propagation and
the editability check.

TT39850

account_payment_partner/models/account_move.py

@@ -33,6 +33,10 @@ class AccountMove(models.Model):
         ondelete="restrict",
         readonly=False,
     )
+    has_reconciled_items = fields.Boolean(
+        help="Technical field for supporting the editability of the payment mode",
+        compute="_compute_has_reconciled_items",
+    )
 
     @api.depends("move_type")
     def _compute_payment_mode_filter_type_domain(self):
@@ -83,6 +87,17 @@ class AccountMove(models.Model):
                             partner.supplier_payment_mode_id.refund_payment_mode_id
                         )
 
+    @api.depends("line_ids.matched_credit_ids", "line_ids.matched_debit_ids")
+    def _compute_has_reconciled_items(self):
+        for record in self:
+            lines_to_consider = record.line_ids.filtered(
+                lambda x: x.account_id.internal_type in ("receivable", "payable")
+            )
+            record.has_reconciled_items = bool(
+                lines_to_consider.matched_credit_ids
+                + lines_to_consider.matched_debit_ids
+            )
+
     @api.onchange("partner_id")
     def _onchange_partner_id(self):
         """Force compute because the onchange chain doesn't call

account_payment_partner/tests/test_account_payment_partner.py

@@ -298,6 +298,10 @@ class TestAccountPaymentPartner(SavepointCase):
         mode = self.supplier_payment_mode.copy()
         aml.payment_mode_id = mode
         self.assertEqual(invoice.payment_mode_id, mode)
+        # Test payment mode editability on account move
+        self.assertFalse(invoice.has_reconciled_items)
+        invoice.payment_mode_id = self.supplier_payment_mode
+        self.assertEqual(aml.payment_mode_id, self.supplier_payment_mode)
 
     def test_invoice_create_out_invoice(self):
         invoice = self._create_invoice(

account_payment_partner/views/account_move_view.xml

@@ -28,8 +28,9 @@
                     name="payment_mode_id"
                     domain="[('payment_type', '=', payment_mode_filter_type_domain), ('company_id', '=', company_id)]"
                     widget="selection"
-                    attrs="{'readonly': [('state', '!=', 'draft')], 'invisible': [('move_type', 'not in', ('out_invoice','out_refund','in_invoice','in_refund'))]}"
+                    attrs="{'readonly': [('has_reconciled_items', '=', True)], 'invisible': [('move_type', 'not in', ('out_invoice','out_refund','in_invoice','in_refund'))]}"
                 />
+                <field name="has_reconciled_items" invisible="1" />
                 <field name="commercial_partner_id" invisible="1" />
                 <field name="bank_account_required" invisible="1" />
                 <field name="payment_mode_filter_type_domain" invisible="1" />