Woocommerce getting top level category parent and make all sub categories have the same template and menu

Question

I want to get the top level category parent which is "wedgwood" so i give it a different menu and different template that what i wrote so far but it dont apply except on ‘wedgwood’ category wegdwood is my top level category i want this to be applied to all categories underneath it

in header.php

if (is_product_category(‘wedgwood’)) {
wp_nav_menu(array(‘menu’=>’wedgwood-menu’ ));
//I want to add here the code that links to another template which is wedgwood-template.php
}

in functions.php

//register the custom menus
function register_my_menus() {
register_nav_menus(
array(‘wedgwood-menu’ => __( ‘Wedgwood Menu’ ))
); }
add_action( ‘init’, ‘register_my_menus’ );

So please i need a solution for this

Answer 1

WP native function get_queried_object() can help you to get an ID of a currently displayed term.

WooCommerce then includes this handy function: woocommerce_get_term_top_most_parent() (originated here on WPSE btw,) that will get it's top-level parent term.

I haven't tested the following code but it should provide a good starting point:

if ( 'wedgwood' == woocommerce_get_term_top_most_parent( get_queried_object()->term_id )->slug ) {
    // your code-fu here ...
}

Regarding the template redirect part of your question - take a look at:
Creating a default Custom Post Template that a Theme can override

Reference:

• WP Codex: get_queried_object()

• Woo Docs: woocommerce_get_term_top_most_parent()

• WPSE: Get the the top-level parent of a custom taxonomy term