[FIX] web: ignore field `message_attachment_count` in debug menu

Open a record with a chatter (ie an opw task), add an attachment, enable
debug mode and click on "Set Defaults" in the debug tools, traceback.

The `message_attachment_count` field is a special view added by the
chatter on the form view. This field exists on the view but is absent on
the list of field listed by the XML file. Setting a default value on
that special field is not supported.

opw-1972372

closes odoo/odoo#33044

Signed-off-by: Alexandre Kühn (aku) <aku@odoo.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/addons/web/static/src/js/tools/debug_manager.js b/addons/web/static/src/js/tools/debug_manager.js
index e4134d18afc..af2067bebaf 100644
--- a/addons/web/static/src/js/tools/debug_manager.js
+++ b/addons/web/static/src/js/tools/debug_manager.js
@@ -433,6 +433,7 @@ DebugManager.include({
         var fields = state.fields;
         var fieldsInfo = state.fieldsInfo.form;
         var fieldNamesInView = state.getFieldNames();
+        var fieldNamesOnlyOnView = ['message_attachment_count'];
         var fieldsValues = state.data;
         var modifierDatas = {};
         _.each(fieldNamesInView, function (fieldName) {
@@ -441,6 +442,7 @@ DebugManager.include({
             });
         });
         this.fields = _.chain(fieldNamesInView)
+            .difference(fieldNamesOnlyOnView)
             .map(function (fieldName) {
                 var modifierData = modifierDatas[fieldName];
                 var invisibleOrReadOnly;