Fixed conditional initialization of querywidget

CHANGES.txt

@@ -7,6 +7,9 @@ Changelog
 - Fixed context for getting ajax results
   [kroman0]
 
+- Fixed conditional initialization of querywidget,
+  see https://dev.plone.org/ticket/12529 [kroman0]
+
 
 1.0b2 (2012-03-19)
 ------------------

plone/formwidget/querystring/querywidget.js

@@ -226,6 +226,11 @@
     // Enhance for javascript browsers
     $(document).ready(function () {
 
+        // Check if QueryWidget exists on page
+        if ($(".QueryWidget").length === 0) {
+            return false;
+        }
+
         // Init
         $.querywidget.init();