protected function getTaxonomy($content)
    {
        $tablename = $this->getTablename("taxonomy");

        $ids = Arr::column($content, 'id');

        if (empty($ids)) {
            return;
        }

        // Get the contenttype from first $content
        $first = reset($content);
        $config = $first->contenttype;
        $contenttype = (isset($config['key'])) ? $config['key'] : $config['slug'];

        $taxonomytypes = $this->app['config']->get('taxonomy');

        // If there are no taxonomytypes, there won't be any results, so we return.
        if (empty($taxonomytypes)) {
            return;
        }

        $query = sprintf(
            "SELECT * FROM %s WHERE content_id IN (?) AND contenttype=? AND taxonomytype IN (?)",
            $tablename
        );
        $rows = $this->app['db']->executeQuery(
            $query,
            [$ids, $contenttype, array_keys($taxonomytypes)],
            [DoctrineConn::PARAM_INT_ARRAY, \PDO::PARAM_STR, DoctrineConn::PARAM_STR_ARRAY]
        )->fetchAll();

        foreach ($rows as $row) {
            $content[$row['content_id']]->setTaxonomy($row['taxonomytype'], $row['slug'], $row['name'], $row['sortorder']);
        }

        foreach ($content as $key => $value) {
            $content[$key]->sortTaxonomy();
        }
    }