/**
  * Overwiev of posts
  *
  * @Privilege("default")
  */
 public function renderDefault()
 {
     $posts = $this->guestbook->getOrderedPosts();
     $vp = new \VisualPaginator($this, 'vp');
     $page = $vp->page;
     $paginator = $vp->getPaginator();
     $paginator->setItemCount($posts->count());
     $paginator->setItemsPerPage(25);
     $paginator->setPage($page);
     $this->template->posts = $posts->limit($paginator->getLength(), $paginator->getOffset());
 }