public static function comment($ctx)
 {
     $aid = $ctx->getPost('id');
     $who = $ctx->getPost('who');
     $comment = $ctx->getPost('comment');
     try {
         ADB::saveCallLog($aid, $who, $comment);
         $ctx->redirect('/view/' . $aid);
     } catch (Exception $e) {
         return $e->getMessage();
     }
 }