public static function getUsers($organisationId)
 {
     $ids = array();
     $tmpIds = Pdo::getInstance()->all('SELECT `user_id` FROM `user_organisation` WHERE `organisation_id` = ?', [$organisationId]);
     foreach ($tmpIds as $id) {
         $ids[] = $id->user_id;
     }
     return ModelUser::getByIds($ids);
 }