[FIX] web_editor: properly start website edit mode as restricted editor

It was impossible to open the website's edit mode as a user with
"restricted editor" permissions. The reason was that wysiwyg_multizone
was trying to manipulate data that is not injected into the html node
when `editable` is false (see `website.layout` template).

closes odoo/odoo#31702

Signed-off-by: Pierre Paridans <pparidans@users.noreply.github.com>

addons/website/static/src/js/editor/wysiwyg_multizone.js

@@ -331,7 +331,7 @@ var WysiwygMultizone = Wysiwyg.extend({
         var data = this._super();
         var res_id = $editable.data('oe-id');
         var res_model = $editable.data('oe-model');
-        if (!$editable.data('oe-model')) {
+        if (!$editable.data('oe-model') && $('html').data('editable')) {
             var object = $('html').data('main-object');
             res_model = object.split('(')[0];
             res_id = +object.split('(')[1].split(',')[0];

addons/website/static/src/js/tours/restricted_editor.js

@@ -0,0 +1,17 @@
+odoo.define("website.tour.restricted_editor", function (require) {
+"use strict";
+
+var tour = require("web_tour.tour");
+
+tour.register("restricted_editor", {
+    test: true,
+    url: "/",
+}, [{
+    trigger: 'a[data-action=edit]',
+    content: "Click \"EDIT\" button of website as Restricted Editor",
+    extra_trigger: ".homepage",
+}, {
+    trigger: '#oe_snippets.o_loaded',
+    content: "Check that the snippets loaded properly",
+}]);
+});

addons/website/tests/test_ui.py

@@ -46,3 +46,15 @@ class TestUi(odoo.tests.HttpCase):
 
     def test_02_admin_tour_banner(self):
         self.phantom_js("/", "odoo.__DEBUG__.services['web_tour.tour'].run('banner')", "odoo.__DEBUG__.services['web_tour.tour'].tours.banner.ready", login='admin')
+
+    def test_03_restricted_editor(self):
+        self.restricted_editor = self.env['res.users'].create({
+            'name': 'Restricted Editor',
+            'login': 'restricted',
+            'password': 'restricted',
+            'groups_id': [(6, 0, [
+                    self.ref('base.group_user'),
+                    self.ref('website.group_website_publisher')
+                ])]
+        })
+        self.phantom_js("/", "odoo.__DEBUG__.services['web_tour.tour'].run('restricted_editor')", "odoo.__DEBUG__.services['web_tour.tour'].tours.restricted_editor.ready", login='restricted')

addons/website/views/website_templates.xml

@@ -122,6 +122,7 @@
 
     <script type="text/javascript" src="/website/static/src/js/tours/banner.js"/>
     <script type="text/javascript" src="/website/static/src/js/tours/customize.js"/>
+    <script type="text/javascript" src="/website/static/src/js/tours/restricted_editor.js"/>
     <script type="text/javascript" src="/website/static/src/js/tours/rte.js"/>
 
     <script type="text/javascript" src="/website/static/src/js/widgets/ace.js"/>