From b90d368ee7bf8a029378cd70f577e24e05e1c13f Mon Sep 17 00:00:00 2001
From: Surinder Kumar <surinder.kumar@enterprisedb.com>
Date: Tue, 18 Jul 2017 16:31:05 +0100
Subject: [PATCH] Resolve an issue where collection nodes sometimes wouldn't
 sort properly.

---
 web/pgadmin/static/js/backgrid.pgadmin.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/web/pgadmin/static/js/backgrid.pgadmin.js b/web/pgadmin/static/js/backgrid.pgadmin.js
index 48ee98cd6..87ef146cd 100644
--- a/web/pgadmin/static/js/backgrid.pgadmin.js
+++ b/web/pgadmin/static/js/backgrid.pgadmin.js
@@ -119,6 +119,7 @@
         // extract the values from the models
 
         var l = func(left, attr), r = func(right, attr), t;
+        if (_.isUndefined(l) || _.isUndefined(r)) return;
 
         var types = ['number-cell', 'integer-cell'];
         if (_.include(types, type)) {