I am trying to get all the IDs in my navigation and convert it to a string so that I can use it with wp_query
to get the pages that are only listed in the nav. The code to get the IDs:
$menu_name="primary";
if ( ( $locations = get_nav_menu_locations() ) && isset( $locations[ $menu_name ] )) {
$menu = wp_get_nav_menu_object( $locations[ $menu_name ] );
$menu_items = wp_get_nav_menu_items($menu->term_id);
}
foreach ( $menu_items as $menu_item ) {
$numbers[] = $menu_item->ID;
}
$number = implode(',',$numbers);
But it is returning the wrong numbers. When I go to the admin area and hover my mouse over the pages, the number that shows up in the address bar on the bottom of the screen doesn’t match. What am I doing wrong?
Menu items are stored in the posts
table with a post_type
of nav_menu_item
. So, what you are returning is the ID of the menu item itself, not what it points to.
The page/post ID that the menu item refers to is stored in the postmeta
table, with a post_id
that matches the menu item ID
and meta_key
= _menu_item_object_id
. The easiest way to get the meta_value
(ie the page being pointed to by the menu item) is to use something like this:
$numbers[] = get_post_meta( $menu_item->ID, '_menu_item_object_id', true );