[FIX] web: action before field willStart end

On a re-render, when:

- a field is not yet started (still in willStart because of RPC)
- then an action is executed

we can get a traceback because we try to save the field before it is
started and `this.el` is not set.

eg. in MRP on a work order:

- click on + to get new serial number

=> page is re-rendered with RPC call to update duration to
   mrp.workcenter.productivity().search_read to update time
   counter

- click on "Record production" before RPC is finished

=> traceback because we try to save `duration` that is not already
started (`this.$el.toggleClass` when `this.$el` is `undefined`)

Without change, added test fails with:

  "Cannot read property 'toggleClass' of undefined"
  in BasicRenderer.canBeSaved

  "Expected 6 assertions, but 5 were run"

Before saas-11.3 5faec34a3c this.el was always set in `init` so this
issue did not happen.

opw-2272117
closes #53532

closes odoo/odoo#53612

X-original-commit: befcad51fd236fdaf284f76cea5624d21c070b0e
Signed-off-by: Nicolas Lempereur (nle) <nle@odoo.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/addons/web/static/src/js/views/basic/basic_renderer.js b/addons/web/static/src/js/views/basic/basic_renderer.js
index f90e27d23d8..9daa9c9936a 100644
--- a/addons/web/static/src/js/views/basic/basic_renderer.js
+++ b/addons/web/static/src/js/views/basic/basic_renderer.js
@@ -100,8 +100,10 @@ var BasicRenderer = AbstractRenderer.extend(WidgetAdapterMixin, {
             if (!canBeSaved) {
                 invalidFields.push(widget.name);
             }
-            widget.$el.toggleClass('o_field_invalid', !canBeSaved);
-            widget.$el.attr('aria-invalid', !canBeSaved);
+            if (widget.el) { // widget may not be started yet
+                widget.$el.toggleClass('o_field_invalid', !canBeSaved);
+                widget.$el.attr('aria-invalid', !canBeSaved);
+            }
         });
         return invalidFields;
     },