rerender can use scope and path

 in this case subgadget calculate as gadget inside gadget (scope) by path

jsonform.gadget.js

@@ -967,22 +967,25 @@
       var g = this,
         gadget,
         queue = RSVP.Queue();
-      if (opt.path) {
+      if (opt.scope) {
         queue
           .push(function () {
-            return g.props.form_gadget.getGadgetByPath(opt.path);
+            return g.props.form_gadget.getDeclaredGadget(opt.scope);
           })
           .push(function (ret) {
-            gadget = ret.gadget;
+            gadget = ret;
           });
       }
-      if (opt.scope) {
+      if (opt.path) {
         queue
           .push(function () {
-            return g.props.form_gadget.getDeclaredGadget(opt.scope);
+            if (!gadget) {
+              gadget = g.props.form_gadget;
+            }
+            return gadget.getGadgetByPath(opt.path);
           })
           .push(function (ret) {
-            gadget = ret;
+            gadget = ret.gadget;
           });
       }
       return queue