BookStack\Http\Controllers\PageController::restrict PHP Метод

    public function restrict($bookSlug, $pageSlug, Request $request)
    {
        $book = $this->bookRepo->getBySlug($bookSlug);
        $page = $this->pageRepo->getBySlug($pageSlug, $book->id);
        $this->checkOwnablePermission('restrictions-manage', $page);
        $this->pageRepo->updateEntityPermissionsFromRequest($request, $page);
        session()->flash('success', 'Page Permissions Updated');
        return redirect($page->getUrl());
    }