sale_order_route: add route_id in sale.report

sale_order_route/models/__init__.py

@@ -1 +1,2 @@
 from . import sale_order
+from . import sale_report

sale_order_route/models/sale_report.py

@@ -0,0 +1,20 @@
+# Copyright 2024 Akretion France (http://www.akretion.com/)
+# @author: Alexis de Lattre <alexis.delattre@akretion.com>
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import fields, models
+
+
+class SaleReport(models.Model):
+    _inherit = "sale.report"
+
+    route_id = fields.Many2one('stock.location.route', string='Route', readonly=True)
+
+    def _select_additional_fields(self, fields):
+        fields['route_id'] = ", s.route_id AS route_id"
+        return super()._select_additional_fields(fields)
+
+    def _group_by_sale(self, groupby=''):
+        res = super()._group_by_sale(groupby=groupby)
+        res += ', s.route_id'
+        return res