[FIX] stock_landed_cost: Moving of the fix #71596 from the product module to stock_landed_cost module

Link to the original commit: https://github.com/odoo/odoo/pull/71596/commits/fc9d63f541340ebcd485cffcd6e9a3ee6cd57f49

opw-2547663

closes odoo/odoo#71890

X-original-commit: 4139a80ac6c366289be7e328329d4868f7685e3d
Signed-off-by: William Henrotin <Whenrow@users.noreply.github.com>
Signed-off-by: Djamel Touati <DjamelTouati@users.noreply.github.com>

addons/stock_landed_costs/i18n/stock_landed_costs.pot

@@ -756,3 +756,11 @@ msgid ""
 "applied for products with automated inventory valuation and FIFO or average "
 "costing method."
 msgstr ""
+
+#. module: stock_landed_costs
+#: code:addons/stock_landed_costs/models/product.py:0
+#, python-format
+msgid ""
+"You cannot change the product type or disable landed cost option because the"
+" product is used in an account move line."
+msgstr ""

addons/stock_landed_costs/models/product.py

@@ -1,8 +1,9 @@
 # -*- coding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
-from odoo import fields, models
+from odoo import fields, models, _
 from odoo.addons.stock_landed_costs.models.stock_landed_cost import SPLIT_METHOD
+from odoo.exceptions import UserError
 
 
 class ProductTemplate(models.Model):
@@ -11,3 +12,12 @@ class ProductTemplate(models.Model):
     landed_cost_ok = fields.Boolean('Is a Landed Cost', help='Indicates whether the product is a landed cost.')
     split_method_landed_cost = fields.Selection(SPLIT_METHOD, string="Default Split Method",
                                                 help="Default Split Method when used for Landed Cost")
+
+    def write(self, vals):
+        for product in self:
+            if (('type' in vals and vals['type'] != 'service') or ('landed_cost_ok' in vals and not vals['landed_cost_ok'])) and product.type == 'service' and product.landed_cost_ok:
+                if self.env['account.move.line'].search_count([('product_id', 'in', product.product_variant_ids.ids), ('is_landed_costs_line', '=', True)]):
+                    raise UserError(_("You cannot change the product type or disable landed cost option because the product is used in an account move line."))
+                else:
+                    vals['landed_cost_ok'] = False
+            super(ProductTemplate, product).write(vals)