I want to assign ‘parent’ and ‘child’ to attributes in Woocommerce!How to enable without plug-ins.

Have you ever wished you could create ‘parents’ and ‘children’ for Woocommerce ‘attributes’, like categories?

This function used to exist but has disappeared after version upgrades.

To make it available in the current version, please add the following code to the ‘functions.php’ of your theme (or child theme if using a child theme).

if( function_exists( 'WC' ) ){
    add_action( 'init', 'ag_woocommerce_register_taxonomies_hack', 4 );

    if( ! function_exists( 'ag_woocommerce_register_taxonomies_hack' ) ){
        function ag_woocommerce_register_taxonomies_hack(){
            if( $attribute_taxonomies = wc_get_attribute_taxonomies() ) {
                foreach ($attribute_taxonomies as $tax) {
                    if ($name = wc_attribute_taxonomy_name($tax->attribute_name)) {
                        add_filter( "woocommerce_taxonomy_args_{$name}", 'ag_woocommerce_taxonomy_product_attribute_args' );
                    }
                }
            }
        }
    }

    if( ! function_exists( 'ag_woocommerce_taxonomy_product_attribute_args' ) ){
        function ag_woocommerce_taxonomy_product_attribute_args( $taxonomy_data ){
            $taxonomy_data['hierarchical'] = true;
            return $taxonomy_data;
        }
    }
}