Ojs\CoreBundle\EventListener\SitemapListener::generateArticleLinks PHP Method

    private function generateArticleLinks(SitemapPopulateEvent $event, Issue $issue)
    {
        $articles = $issue->getArticles();
        $journal = $issue->getJournal();
        foreach ($articles as $article) {
            $event->getUrlContainer()->addUrl(new UrlConcrete($this->router->generate('ojs_article_page', ['slug' => $journal->getSlug(), 'issue_id' => $issue->getId(), 'article_id' => $article->getId()], true), new \DateTime(), UrlConcrete::CHANGEFREQ_WEEKLY, 1), 'journals-' . $journal->getSlug());
        }
        return $event;
    }