How do you get the current-menu-item ID?

Question

Im trying to get the id of the menu item that has be class called "current-menu-item". Not the current page id, but the nav item id.

Please help

Answer 1

This should solve it How to get current-menu-item title as variable?

but change

$GLOBALS['wpse16243_title'] = $menu_item->title;

to

$GLOBALS['wpse16243_title'] = $menu_item->ID;

and now you can use the global variable $wpse16243_title to get the ID

Answer 2

The best way would be to use the nav_menu_css_class filter. Something like this would work:

function wpse19375_nav_class( $classes, $item ){
  if( !in_array( 'current-menu-item', $classes ) )
    return $classes;
  // $item is a 'current-menu-item' object.
  return $classes;
}

add_filter( 'nav_menu_css_class', 'wpse19375_nav_class', 10, 2 );

Answer 3

A little late perhaps, but there is one more way of doing it:

$menu = wp_get_nav_menu_items($menu_id,array(
   'posts_per_page' => -1,
   'meta_key' => '_menu_item_object_id',
   'meta_value' => $post->ID // the currently displayed post
));

var_dump($menu[0]->ID);

Since menu items are post-types you are able to use all the WP-Query params, even a meta query. The code above selects all menu_items which are connected to the current post, from the menu you specify via $menu_id.