如何使用 Drupal nice menus 来显示任何级别的书籍菜单？

Question

我想使用 Drupal Nice Menus 显示某些书籍或任何级别的子书籍，但看不到 theme_nice_menus 函数将如何做到这一点。

我正在查看下面的代码示例以获得一些灵感：

第一个示例适用于所有书籍，但我需要传递选定的书籍，甚至是子书籍。

第二个例子适用于一本书，但没有使用漂亮的菜单？ menu_tree_all_data 或 menu_tree_output 的输出可以传递给theme_nice_menus 函数吗？

第三个来自 github 上的 bookoblock 模块，它显示了如何从它的孩子那里获取一本单独的书，而不是从它的孩子那里获取子书，并且不使用漂亮的菜单。

我正在尝试创建这些示例中的一些内容。从子书而不是顶级书生成菜单是我想做的一件事。

<?php
$master_menu = '';
$books = book_get_books();
foreach($books as $book_nid=>$book) {
  $menu = theme('nice_menus', array('id' => $book['mlid'], 'direction' => 'right', 'depth' => -1, 'menu_name' => $book['menu_name'], 'menu' => NULL));
  $master_menu .= $menu['content'];
}
print $master_menu;
?>

<?php
  $book_top_page= 49;
  $tree = menu_tree_all_data(book_menu_name($book_top_page));
  print drupal_render(menu_tree_output($tree));
?>

<?php
function bookoblock_block_view() {
  if ($book = bookoblock_is_book_node()) {
    // menu_build_tree() doesn't accept zero for depth, so we convert that to
    // NULL and add 1 if it's not 0 to account for the first (skipped) level.
    $max_depth = variable_get('bookoblock_depth', NULL);
    $max_depth = ($max_depth == 0) ? NULL : ($max_depth + 1);

    // Vars and params for the menu_build_tree() function.
    $path = 'node/' . $book['bid'];
    $parent = menu_link_get_preferred($path, book_menu_name($book['bid']));
    $parameters = array(
      'only_active_trail' => FALSE,
      'min_depth' => $parent['depth'] + 1,
      'max_depth' => $max_depth,
    );

    // Build the tree and block title.
    $children = menu_build_tree($parent['menu_name'], $parameters);
    $book_name = (book_toc($book['bid'], 1));

    // Build and return the $block array.
    $block['subject'] = l($book_name[$book['p1']], 'node/' . $book['bid']);
    $block['content'] = menu_tree_output($children);
    return $block;
  }
  // If the current node isn't part of a book, just return nothing.
  return NULL;
}

?>

Answer 1

我决定使用第一种方法，修改 Drupal API book_get_books 函数的代码以仅选择所需的书籍。

<?php
$master_menu = '';
unset($four_books);
  $four_books_list = "91,323,47,149";
  $four_books = &drupal_static(__FUNCTION__);
  if (!isset($four_books)) {
    $four_books = array();
    $nids = db_query("SELECT DISTINCT(bid) FROM {book} where bid in (91,323,47,149)")->fetchCol();

    if ($nids) {
      $query = db_select('book', 'b', array('fetch' => PDO::FETCH_ASSOC));
      $query->join('node', 'n', 'b.nid = n.nid');
      $query->join('menu_links', 'ml', 'b.mlid = ml.mlid');
      $query->addField('n', 'type', 'type');
      $query->addField('n', 'title', 'title');
      $query->fields('b');
      $query->fields('ml');
      $query->condition('n.nid', $nids, 'IN');
      $query->condition('n.status', 1);
      $query->orderBy('ml.weight');
      $query->orderBy('ml.link_title');
      $query->addTag('node_access');
      $result2 = $query->execute();
      foreach ($result2 as $link) {
        $link['href'] = $link['link_path'];
        $link['options'] = unserialize($link['options']);
        $four_books[$link['bid']] = $link;
      }
    }
  }

foreach($four_books as $book_nid=>$book) {
  $menu = theme('nice_menus', array('id' => $book['mlid'], 'direction' => 'right', 'depth' => -1, 'menu_name' => $book['menu_name'], 'menu' => NULL));
  $master_menu .= $menu['content'];
}
print $master_menu;
?>