IcingaHost: add enumProperties, test for now

library/Director/Db.php

@@ -382,6 +382,25 @@ class Db extends DbConnection
         return $this->enum('icinga_' . $type, null, $filters);
     }
 
+    public function fetchDistinctHostVars()
+    {
+        $select = $this->db()->select()->distinct()->from(
+            array('hv' => 'icinga_host_var'),
+            array(
+                'varname'  => 'hv.varname',
+                'format'   => 'hv.format',
+                'caption'  => 'df.caption',
+                'datatype' => 'df.datatype'
+            )
+        )->joinLeft(
+            array('df' => 'director_datafield'),
+            'df.varname = hv.varname',
+            array()
+        )->order('varname');
+
+        return $this->db()->fetchAll($select);
+    }
+
     public function getUncollectedDeployments()
     {
         $db = $this->db();

library/Director/Objects/IcingaHost.php

@@ -2,6 +2,7 @@
 
 namespace Icinga\Module\Director\Objects;
 
+use Icinga\Data\Db\DbConnection;
 use Icinga\Module\Director\Web\Form\DirectorObjectForm;
 
 class IcingaHost extends IcingaObject
@@ -46,6 +47,25 @@ class IcingaHost extends IcingaObject
 
     protected $supportsFields = true;
 
+    public static function enumProperties(DbConnection $connection = null)
+    {
+        $properties = static::create()->listProperties();
+        $properties = array_combine($properties, $properties);
+        if ($connection !== null) {
+            foreach ($connection->fetchDistinctHostVars() as $var) {
+                if ($var->datatype) {
+                    $properties['vars.' . $var->varname] = $var->caption;
+                } else {
+                    $properties['vars.' . $var->varname] = 'vars.' . $var->varname;
+                }
+            }
+        }
+
+        $properties['vars.*'] = 'Other custom variable';
+
+        return $properties;
+    }
+
     protected function renderCheck_command_id()
     {
         return $this->renderCommandProperty($this->check_command_id);