Блок навигации для переведенной книги

function book_node_load($nodes, $types) {
  $result = db_query("SELECT * FROM {book} b INNER JOIN {menu_links} ml ON b.mlid = ml.mlid WHERE b.nid IN (:nids)", array(':nids' =>  array_keys($nodes)), array('fetch' => PDO::FETCH_ASSOC));
  foreach ($result as $record) {
    $nodes[$record['nid']]->book = $record;
    $nodes[$record['nid']]->book['href'] = $record['link_path'];
    $nodes[$record['nid']]->book['title'] = $record['link_title'];
    $nodes[$record['nid']]->book['options'] = unserialize($record['options']);
  }
}