Fixed nonregistered model bug in wiget manager

12 years ago · 73380ca442
parent 3c866ea412
commit 73380ca442
1 changed files with 1 additions and 1 deletions
--- a/IPython/html/static/notebook/js/widgetmanager.js
+++ b/IPython/html/static/notebook/js/widgetmanager.js
@ -78,7 +78,7 @@

        WidgetManager.prototype.get_model = function (widget_id) {
            var model = this._model_instances[widget_id];
-            if (model.id == widget_id) {
+            if (model !== undefined && model.id == widget_id) {
                return model;
            }
            return null;