diff --git a/backend/lib/model/group.php b/backend/lib/model/group.php
index 1c5dc95..5e8f693 100644
--- a/backend/lib/model/group.php
+++ b/backend/lib/model/group.php
@@ -37,6 +37,10 @@ class Group extends DatabaseObject {
 		return $groups;
 	}
 	
+	public static function getByUgid($uuid) {
+		return current(self::getByFilter(array('ugid' => $ugid)));
+	}
+	
 	public function getUsers($recursive = false) {
 		$groups[$this->id] = $this;
 		if ($recursive === true) {
diff --git a/backend/lib/model/user.php b/backend/lib/model/user.php
index 6669496..efae38b 100644
--- a/backend/lib/model/user.php
+++ b/backend/lib/model/user.php
@@ -28,6 +28,10 @@ class User extends DatabaseObject {
 	/*
 	 * simple self::getByFilter() wrapper
 	 */
+	public static function getByUuid($uuid) {
+		return current(self::getByFilter(array('uuid' => $uuid)));
+	}
+	
 	public static function getByEMail($email) {
 		return current(self::getByFilter(array('email' => $email)));
 	}