From bb7a70aadd1914ea25e4e88b080ea3e4ea25f0e7 Mon Sep 17 00:00:00 2001
From: Burcu Dogan <jbd@google.com>
Date: Mon, 21 Jul 2014 11:05:55 -0700
Subject: [PATCH] datastore: Arrayize input field names.

---
 lib/datastore/query.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/datastore/query.js b/lib/datastore/query.js
index ef5947e17af..01230d31484 100644
--- a/lib/datastore/query.js
+++ b/lib/datastore/query.js
@@ -61,8 +61,9 @@ Query.prototype.order = function(order) {
 };
 
 Query.prototype.groupBy = function(fieldNames) {
+  var fields = util.arrayize(fieldNames);
   var q = util.extend(this, new Query());
-  q.groupByVal = fieldNames;
+  q.groupByVal = fields;
   return q;
 };