How to target parent product category and its children using WooCommerce?

Question

In WooCommerce, archive-product is the default template for all product categories. I want to create a new product category template for one parent category and all of its children.

I've created a new template archive-foo.php

Now I need to change the code inside taxonomy-product_cat.php and tell it to use archive-foo.php "if it's my parent category or any of its children".

Here is my code inside taxonomy-product_cat.php:

if (is_product_category( 'foo-category' ) || cat_is_ancestor_of(19, get_queried_object()->term_id )){ wc_get_template( 'archive-foo.php' );
    } else { wc_get_template( 'archive-product.php' ); }

Currently, it's working for the parent category, but none of its children. Any help would be greatly appreciated.

Answer 1

the WordPress function cat_is_ancestor_of() is made for WordPress categories, but not for WooCommerce product categories which is a custom taxonomy product_cat.

For Custom taxonomies you can use WordPress term_is_ancestor_of() function like:

term_is_ancestor_of( 19, get_queried_object_id(), 'product_cat' )

So in your code:

if ( is_product_category( 'foo-category' ) || term_is_ancestor_of( 19, get_queried_object_id(), 'product_cat' ) ) { 
    wc_get_template( 'archive-foo.php' );
} else { 
    wc_get_template( 'archive-product.php' ); 
}

This time it should work.