protected function build($id, Request $request, Application $app)
 {
     $this->parameters = array('currentUserWatchesGroup' => false);
     $ugr = new UserGroupRepository();
     $this->parameters['usergroup'] = $ugr->loadByIdInSite($id, $app['currentSite']);
     if (!$this->parameters['usergroup']) {
         return false;
     }
     return true;
 }
 protected function build($siteid, $id, Request $request, Application $app)
 {
     $this->parameters = array();
     $sr = new SiteRepository();
     $this->parameters['site'] = $sr->loadById($siteid);
     if (!$this->parameters['site']) {
         $app->abort(404);
     }
     $sr = new UserGroupRepository();
     $this->parameters['usergroup'] = $sr->loadByIdInSite($id, $this->parameters['site']);
     if (!$this->parameters['usergroup']) {
         $app->abort(404);
     }
 }