public function luoMuokattuViesti($id)
 {
     $params = $_POST;
     $viesti = Viesti::getRow($id);
     $attributes = array('id' => $id, 'content' => $params['viesti'], 'thread' => $viesti['thread']);
     $message = new Viesti($attributes);
     $errors = $message->errors();
     if (count($errors) == 0) {
         $message->update();
     } else {
         Redirect::to('/viesti/edit/' . $id, array('errors' => $errors, 'params' => $params));
     }
     Redirect::to('/langat/' . $viesti['thread'], array('message' => 'Viesti muokattu onnistuneesti!'));
 }