XXX i believe it reverted in future

gadget_json_generated_form.js

@@ -284,6 +284,17 @@
       json_field.type = getDocumentType(default_value);
     }
 
+    // XXX bad peace of code
+    // we can not change schema
+    // but our schema in slapos bad
+    if (!json_field.type) {
+      if (json_field.properties &&
+          json_field.required &&
+          json_field.required.length > 0) {
+        json_field.type = "object";
+      }
+    }
+
     div = document.createElement("div");
     div.setAttribute("class", "subfield");
     div.title = json_field.description;