1 files changed, 4 insertions, 3 deletions
diff --git a/addons/web/static/src/js/views/basic/basic_model.js b/addons/web/static/src/js/views/basic/basic_model.js
index c51f512b966..a8538b70d98 100644
--- a/addons/web/static/src/js/views/basic/basic_model.js
+++ b/addons/web/static/src/js/views/basic/basic_model.js
@@ -3148,14 +3148,15 @@ var BasicModel = AbstractModel.extend({
         options = options || {};
         var viewType = options.viewType || record.viewType;
         var changes;
-        if ('changesOnly' in options && !options.changesOnly) {
+        const changesOnly = 'changesOnly' in options ? !!options.changesOnly : true;
+        if (!changesOnly) {
             changes = _.extend({}, record.data, record._changes);
         } else {
             changes = _.extend({}, record._changes);
         }
         var withReadonly = options.withReadonly || false;
         var commands = this._generateX2ManyCommands(record, {
-            changesOnly: 'changesOnly' in options ? options.changesOnly : true,
+            changesOnly: changesOnly,
             withReadonly: withReadonly,
         });
         for (var fieldName in record.fields) {
@@ -3172,7 +3173,7 @@ var BasicModel = AbstractModel.extend({
             var type = record.fields[fieldName].type;
             var value;
             if (type === 'one2many' || type === 'many2many') {
-                if (!options.changesOnly || (commands[fieldName] && commands[fieldName].length)) { // replace localId by commands
+                if (!changesOnly || (commands[fieldName] && commands[fieldName].length)) { // replace localId by commands
                     changes[fieldName] = commands[fieldName];
                 } else { // no command -> no change for that field
                     delete changes[fieldName];