public function postNavigation(Request $request, Page $page)
    {
        $this->authorize('editNavBasic', $page);

        if (Gate::allows('editNavAdvanced', $page)) {
            $parent = Page::find($request->input('parent_id'));

            if ($parent) {
                $page->setParent($parent);
            }
        }

        $page
            ->setVisibleInNav($request->has('visible_in_nav'))
            ->setVisibleInCmsNav($request->has('visible_in_nav_cms'));

        PageFacade::save($page);
    }