public function generateArticleBarChartDataDoctrine($articles, $dates) { $articleStatRepo = $this->manager->getRepository('OjsAnalyticsBundle:ArticleStatistic'); $articleStats = $articleStatRepo->findByArticles($articles, $dates); $articleViews = ['View']; foreach ($dates as $date) { $total = 0; /** @var ArticleStatistic $stat */ $stat = $articleStats->first(); while ($stat && $stat->getDate()->format($this::DATE_FORMAT) == $date) { $total += $stat->getView(); $articleStats->removeElement($stat); $stat = $articleStats->first(); } $articleViews[] = $total; } return $articleViews; }