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

    public function restoreRevision($bookSlug, $pageSlug, $revisionId)
    {
        $book = $this->bookRepo->getBySlug($bookSlug);
        $page = $this->pageRepo->getBySlug($pageSlug, $book->id);
        $this->checkOwnablePermission('page-update', $page);
        $page = $this->pageRepo->restoreRevision($page, $book, $revisionId);
        Activity::add($page, 'page_restore', $book->id);
        return redirect($page->getUrl());
    }