Ojs\CoreBundle\EventListener\SitemapListener::generateIssueLinks PHP Метод

    private function generateIssueLinks(SitemapPopulateEvent $event, Journal $journal)
    {
        $issues = $journal->getIssues();
        /** @var Issue $issue */
        foreach ($issues as $issue) {
            $event->getGenerator()->addUrl(new UrlConcrete($this->router->generate('ojs_issue_page', ['journal_slug' => $journal->getSlug(), 'id' => $issue->getId()], true), new \DateTime(), UrlConcrete::CHANGEFREQ_WEEKLY, 1), 'journals-' . $journal->getSlug());
            $event = $this->generateArticleLinks($event, $issue);
        }
        return $event;
    }