public function nodeAction()
    {
        //wyłączenie layout
        FrontController::getInstance()->getView()->setLayoutDisabled();
        //id węzła rodzica
        $this->view->parentId = ($this->parentId > 0) ? $this->parentId : null;
        //pobranie drzewiastej struktury stron CMS
        $this->view->categoryTree = (new \Cms\Model\CategoryModel)->getCategoryTree($this->view->parentId);
    }