Fix major bug when duplicating record with internal objects.

static/plugin_dbui/src/form/Panel.js

@@ -302,6 +302,7 @@ Ext.define('App.form.Panel', {
 
         var me = this,
             form = me.getForm(),
+            newRecord,
             table,
             tableId;
 
@@ -334,7 +335,17 @@ Ext.define('App.form.Panel', {
 
         case 'duplicate':
             me.buttonAction.setText(me.textDuplicate);
-            form.loadRecord(record);
+
+            // create a copy without keeping the reference to internal objects
+            newRecord = record.copy();
+            Ext.Array.each(newRecord.fields.items, function (field) {
+               var value = newRecord.data[field.name];
+               if (typeof value === "object") {
+                   newRecord.data[field.name] = Ext.clone(value);
+               }
+            });
+
+            form.loadRecord(newRecord);
             break;
 
         case 'update':