function menu_navigation_links

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7 menu.inc menu_navigation_links($menu_name, $level = 0)
6 menu.inc menu_navigation_links($menu_name, $level = 0)
8 menu.inc menu_navigation_links($menu_name, $level = 0)

Returns an array of links for a navigation menu.

Parameters

$menu_name: The name of the menu.

$level: Optional, the depth of the menu to be returned.

Return value

An array of links of the specified menu and level.

Related topics

2 calls to menu_navigation_links()
menu_main_menu in includes/menu.inc
Returns an array of links to be rendered as the Main menu.
menu_secondary_menu in includes/menu.inc
Returns an array of links to be rendered as the Secondary links.

File

includes/menu.inc, line 1834
API for the Drupal menu system.

Code

function menu_navigation_links($menu_name, $level = 0) {
  // Don't even bother querying the menu table if no menu is specified.
  if (empty($menu_name)) {
    return array();
  }

  // Get the menu hierarchy for the current page.
  $tree = menu_tree_page_data($menu_name, $level + 1);

  // Go down the active trail until the right level is reached.
  while ($level-- > 0 && $tree) {
    // Loop through the current level's items until we find one that is in trail.
    while ($item = array_shift($tree)) {
      if ($item['link']['in_active_trail']) {
        // If the item is in the active trail, we continue in the subtree.
        $tree = empty($item['below']) ? array() : $item['below'];
        break;
      }
    }
  }

  // Create a single level of links.
  $router_item = menu_get_item();
  $links = array();
  foreach ($tree as $item) {
    if (!$item['link']['hidden']) {
      $class = '';
      $l = $item['link']['localized_options'];
      $l['href'] = $item['link']['href'];
      $l['title'] = $item['link']['title'];
      if ($item['link']['in_active_trail']) {
        $class = ' active-trail';
        $l['attributes']['class'][] = 'active-trail';
      }
      // Normally, l() compares the href of every link with $_GET['q'] and sets
      // the active class accordingly. But local tasks do not appear in menu
      // trees, so if the current path is a local task, and this link is its
      // tab root, then we have to set the class manually.
      if ($item['link']['href'] == $router_item['tab_root_href'] && $item['link']['href'] != $_GET['q']) {
        $l['attributes']['class'][] = 'active';
      }
      // Keyed with the unique mlid to generate classes in theme_links().
      $links['menu-' . $item['link']['mlid'] . $class] = $l;
    }
  }
  return $links;
}

Comments

Should this function check if its first argument is empty? It means this function is aware of input that is out of scope. It really should be up to the caller to send valid arguments to the functions it delegates to.