IcingaService: make use of fields

library/Director/Objects/IcingaObject.php

@@ -377,7 +377,7 @@ abstract class IcingaObject extends DbObject implements IcingaConfigRenderer
             array('f' => $this->getTableName() . '_field'),
             'df.id = f.datafield_id',
             array()
-        )->where('f.host_id = ?', (int) $this->id)
+        )->where('f.' . $this->getShortTableName() . '_id = ?', (int) $this->id)
          ->order('df.caption ASC');
 
         $res = $db->fetchAll($query);

library/Director/Objects/IcingaService.php

@@ -38,6 +38,8 @@ class IcingaService extends IcingaObject
 
     protected $supportsCustomVars = true;
 
+    protected $supportsFields = true;
+
     protected $supportsImports = true;
 
     protected function renderCheck_command_id()