From 351f7d61539ffd9b0e964d5349ba93cbd4f96b7b Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <bruederli@kolabsys.com>
Date: Mon, 10 Feb 2014 16:01:49 +0100
Subject: [PATCH] Avoid null values for empty fields

---
 plugins/libkolab/lib/kolab_storage_cache_contact.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/plugins/libkolab/lib/kolab_storage_cache_contact.php b/plugins/libkolab/lib/kolab_storage_cache_contact.php
index b70b37f3..9666a390 100644
--- a/plugins/libkolab/lib/kolab_storage_cache_contact.php
+++ b/plugins/libkolab/lib/kolab_storage_cache_contact.php
@@ -49,6 +49,10 @@ class kolab_storage_cache_contact extends kolab_storage_cache
         if (is_array($sql_data['email'])) {
             $sql_data['email'] = $sql_data['email']['address'];
         }
+        // avoid value being null
+        if (empty($sql_data['email'])) {
+            $sql_data['email'] = '';
+        }
 
         return $sql_data;
     }