From 21e669410e7ade8f93f46b9f183e6e377bd348e4 Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <bruederli@kolabsys.com>
Date: Fri, 28 Feb 2014 17:04:34 +0100
Subject: [PATCH] Only set 'url' property if actually submitted by the client
 (#2876)

---
 plugins/calendar/calendar.php | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/plugins/calendar/calendar.php b/plugins/calendar/calendar.php
index 092a2247..4e8995ed 100644
--- a/plugins/calendar/calendar.php
+++ b/plugins/calendar/calendar.php
@@ -1654,8 +1654,10 @@ class calendar extends rcube_plugin
     }
 
     // mapping url => vurl because of the fullcalendar client script
-    $event['url'] = $event['vurl'];
-    unset($event['vurl']);
+    if (array_key_exists('vurl', $event)) {
+      $event['url'] = $event['vurl'];
+      unset($event['vurl']);
+    }
   }
 
   /**