[FIX] web_editor: update attribute of edition container

In most use case, when we edit the website we have a situation such as:

```
<div id="wrap" branding-attributes="...">
    <section class="mycontent">hi!</section>
</div>
```

When we modify a part, we replace all child nodes of the branded
element.

But if we had more complex content such as:

```
<div id="wrap">
    <section class="mycontent" branding-attributes="...">ho!</section>
    <t t-call-assets="web.assets_common" t-js="false" t-css="false"/>
</div>
```

we have a t-call inside the div#wrap, so branding is distributed to
child that could have attribute modified (eg. changing background).

Then if `<section/>` node is saved, the possibly modified attributes
are lost.

Without the change, the added test fails with:

 '<div class="nice">hoi</div>' not found in '...<div>hoi</div>...' :
 saved element attributes are saved excluding branding ones

opw-2122947
closes #40345

closes odoo/odoo#40830

X-original-commit: 71b20a24c40ae9daa10076ab0fd656b043819cff
Signed-off-by: Nicolas Lempereur (nle) <nle@odoo.com>

addons/web_editor/models/ir_ui_view.py

@@ -10,6 +10,8 @@ from odoo import api, fields, models
 
 _logger = logging.getLogger(__name__)
 
+EDITING_ATTRIBUTES = ['data-oe-model', 'data-oe-id', 'data-oe-field', 'data-oe-xpath', 'data-note-id']
+
 
 class IrUiView(models.Model):
     _inherit = 'ir.ui.view'
@@ -132,6 +134,11 @@ class IrUiView(models.Model):
         # Note: after a standard edition, the tail *must not* be replaced
         if replace_tail:
             root.tail = replacement.tail
+        # update attributes
+        root.attrib.clear()
+        root.attrib.update(replacement.attrib)
+        for attribute in EDITING_ATTRIBUTES:
+            root.attrib.pop(attribute, None)
         # replace all children
         del root[:]
         for child in replacement:

addons/website/tests/test_views.py

@@ -221,6 +221,20 @@ class TestViewSaving(common.TransactionCase):
             'text node characters wrongly unescaped when rendering'
         )
 
+    def test_save_node_with_attr(self):
+        """ Test saving node with saved element changed attrs """
+        view = self.env['ir.ui.view'].create({
+            'arch': u'<t t-name="dummy"><div>hi</div><t esc="0"/></t>',
+            'type': 'qweb'
+        })
+        replacement = u'<div data-oe-id="55" class="nice">hoi</div>'
+        view.save(replacement, xpath='/t/div')
+        self.assertIn(
+            '<div class="nice">hoi</div>',
+            view.arch,
+            'saved element attributes are saved excluding branding ones'
+        )
+
     def test_save_only_embedded(self):
         Company = self.env['res.company']
         company_id = 1