From b3a44bd7dd470ca68f0f83a3f3a8afbee01380a9 Mon Sep 17 00:00:00 2001
From: Thomas Gelf <thomas@gelf.net>
Date: Mon, 7 Mar 2016 18:07:36 +0100
Subject: [PATCH] IcingaObject: fix 'empty' check for relation property

---
 library/Director/Objects/IcingaObject.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/library/Director/Objects/IcingaObject.php b/library/Director/Objects/IcingaObject.php
index 1351ca0b..4cd4619e 100644
--- a/library/Director/Objects/IcingaObject.php
+++ b/library/Director/Objects/IcingaObject.php
@@ -290,7 +290,7 @@ abstract class IcingaObject extends DbObject implements IcingaConfigRenderer
         }
 
         if ($this->hasRelation($key)) {
-            if (! $value) {
+            if (strlen($value) === 0) {
                 return parent::set($key . '_id', null);
             }