From ac4dba11670f93289ca6318c3c06b49bf4ec0811 Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Wed, 1 Feb 2017 12:02:09 +0100
Subject: [statistics_reporting] Fix loadForm() and further js interaction if
 sessionStorage is still empty

---
 .../statistics_reporting/templates/columnChooser.html            | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

(limited to 'modules-available/statistics_reporting')

diff --git a/modules-available/statistics_reporting/templates/columnChooser.html b/modules-available/statistics_reporting/templates/columnChooser.html
index 513bc36b..cfaf086c 100644
--- a/modules-available/statistics_reporting/templates/columnChooser.html
+++ b/modules-available/statistics_reporting/templates/columnChooser.html
@@ -159,9 +159,12 @@
 		var cutoff = getQueryVariable("cutoff");
 		$('#select-cutoff').val(cutoff ? cutoff : 7);
 
-		sessionStorage.getItem("buttons").split(" ").forEach(function(button) {
-			toggleButton(button.substr(7));
-		});
+		var buttons = sessionStorage.getItem("buttons");
+		if (buttons) {
+			buttons.split(" ").forEach(function (button) {
+				toggleButton(button.substr(7));
+			});
+		}
 	}
 
 	function getQueryVariable(variable)
-- 
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