public MenuLinkTree::build(array $tree)
Builds a renderable array from a menu tree.
The menu item's LI element is given one of the following classes:
- expanded: The menu item is showing its submenu.
- collapsed: The menu item has a submenu that is not shown.
- leaf: The menu item has no submenu.
Parameters
\Drupal\Core\Menu\MenuLinkTreeElement[] $tree: A data structure representing the tree, as returned from MenuLinkTreeInterface::load().
Return value
array A renderable array.
Overrides MenuLinkTreeInterface::build
File
- core/lib/Drupal/Core/Menu/MenuLinkTree.php, line 150
Class
- MenuLinkTree
- Implements the loading, transforming and rendering of menu link trees.
Namespace
Drupal\Core\Menu
Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | public function build(array $tree) { $tree_access_cacheability = new CacheableMetadata(); $tree_link_cacheability = new CacheableMetadata(); $items = $this->buildItems($tree, $tree_access_cacheability, $tree_link_cacheability); $build = []; // Apply the tree-wide gathered access cacheability metadata and link // cacheability metadata to the render array. This ensures that the // rendered menu is varied by the cache contexts that the access results // and (dynamic) links depended upon, and invalidated by the cache tags // that may change the values of the access results and links. $tree_cacheability = $tree_access_cacheability->merge($tree_link_cacheability); $tree_cacheability->applyTo($build); if ($items) { // Make sure drupal_render() does not re-order the links. $build['#sorted'] = TRUE; // Get the menu name from the last link. $item = end($items); $link = $item['original_link']; $menu_name = $link->getMenuName(); // Add the theme wrapper for outer markup. // Allow menu-specific theme overrides. $build['#theme'] = 'menu__' . strtr($menu_name, '-', '_'); $build['#menu_name'] = $menu_name; $build['#items'] = $items; // Set cache tag. $build['#cache']['tags'][] = 'config:system.menu.' . $menu_name; } return $build;} |
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