[FIX] website: fix primary inherit view validation when tree is COW'd

Before this commit, it was not possible to install website_forum if the 'Main
Frontent Layout' had been COW'd.

When loading Forum Layout view which is a primary child view, it would crash
during view validation, not finding the element to xpath.

Triggering COW instead of copying fix the issue.

opw-2036119

closes odoo/odoo#35138

Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>

addons/website/models/ir_ui_view.py

@@ -134,12 +134,8 @@ class View(models.Model):
                     ('website_id', '!=', None),
                 ])
                 for specific_parent_view in specific_parent_views:
-                    record.copy({
-                        # Set key to avoid copy() to generate an unique key as
-                        # we want the specific view to have the same key
-                        'key': record.key,
+                    record.with_context(website_id=specific_parent_view.website_id.id).write({
                         'inherit_id': specific_parent_view.id,
-                        'website_id': specific_parent_view.website_id.id,
                     })
         return records
 

addons/website/tests/test_views.py

@@ -811,6 +811,43 @@ class TestCowViewSaving(common.TransactionCase):
         all_title_updated = specific_view.website_meta_title == self.base_view.website_meta_title == "A bug got fixed by updating this field"
         self.assertEqual(all_title_updated, True, "Update on top level generic views should also be applied on specific views")
 
+    def test_module_new_inherit_view_on_parent_already_forked_xpath_replace(self):
+        """ Deeper, more specific test of above behavior.
+            A module install should add/update the COW view (if allowed fields,
+            eg not modified or prohibited (website_id, inherit_id..)).
+            This test ensure it does not crash if the child view is a primary view.
+        """
+        View = self.env['ir.ui.view']
+
+        # Simulate layout views
+        base_view = View.create({
+            'name': 'Main Frontend Layout',
+            'type': 'qweb',
+            'arch': '<t t-call="web.layout"><t t-set="head_website"/></t>',
+            'key': '_portal.frontend_layout',
+        }).with_context(load_all_views=True)
+
+        inherit_view = View.create({
+            'name': 'Main layout',
+            'mode': 'extension',
+            'inherit_id': base_view.id,
+            'arch': '<xpath expr="//t[@t-set=\'head_website\']" position="replace"><t t-call-assets="web_editor.summernote" t-js="false" groups="website.group_website_publisher"/></xpath>',
+            'key': '_website.layout',
+        })
+
+        # Trigger cow on website_sale hierarchy for website 1
+        base_view.with_context(website_id=1).write({'name': 'Main Frontend Layout (W1)'})
+
+        # Simulate website_sale_comparison install, that's the real test, it
+        # should not crash.
+        View._load_records([dict(xml_id='_website_forum.layout', values={
+            'name': 'Forum Layout',
+            'mode': 'primary',
+            'inherit_id': inherit_view.id,
+            'arch': '<xpath expr="//t[@t-call-assets=\'web_editor.summernote\'][@t-js=\'false\']" position="attributes"><attribute name="groups"/></xpath>',
+            'key': '_website_forum.layout',
+        })])
+
     def test_multiple_inherit_level(self):
         """ Test multi-level inheritance:
             Base