I know this may sound stupid, but I created a code which (in theory) should add a few submenus to my primary menu.
However I don’t seem to be able to display this new menu because I don’t know when I should execute it in my theme.
My question therefore: Where do I place wp_update_nav_menu_items(…)?
My Code:
$c = array(
"taxonomy" => $post->post_name,
"hide_empty" => false,
"orderby" => "term_id"
);
$categories = get_categories( $c );
if (count($categories) != 0) {
$theme_location = 'primary';
$theme_locations = get_nav_menu_locations();
$menu_obj = get_term( $theme_locations[$theme_location], 'nav_menu' );
$menu_name = $menu_obj->name;
$menu_id = $menu_obj->term_id;
$menu = wp_get_nav_menu_items( $menu_id );
foreach($menu as $menu_item) {
if ($menu_item->object_id == $post->ID) {
$post_menu = $menu_item->db_id;
}
}
foreach( $categories as $cat ) {
add_cat($cat);
}
function add_cat($cat) {
$item = array(
'menu-item-title' => $cat->name,
'menu-item-parent-id' => $post_menu,
'menu-item-url' => $cat->slug,
'menu-item-status' => 'publish'
);
$sub_id = wp_update_nav_menu_item( $menu_id, 0, $item );
}
}
As far as I know, this should add all categories from the taxonomy with the same slug as this post as sub-item. Right?