Permalinks for WooCommerce Categories and Subcategories

Setup

Desired permalink structure (only these structures exist for products)

Product 1: /shop/category/subcategory/product1/
Product 2: /shop/category/product2/

Woocommerce Product View Settings
View for shopbase:     Show categories
View for categories:   Show products

Products
Products are only checked for one category OR subcategory

Permalink Settings
Normal settings:       /%category%/%postname%/
Base for categories:   shop
For products:          /shop/%product_cat%/

Archives
Since there are over 100 subcategories, I want to use an archive to list all 
the products.

Attempts to solve

With the below attempts I’ve been able to produce a working Product-page but while doing so, also 404:ing the subcategory page. I can’t recall which option produces what result.

  1. I have tried different permalink settings for the product categorybase, including %category%/%product_cat%, %category%/%product_cat%/%postname%, %product_cat%/%product_cat%, shop/%product_cat%, shop/%product_cat%/%postname%, and all those above combinations with an ending as /. as well
  2. I’ve tried swapping above with the base shop permalink setting.
  3. I’ve tried chaning Product View Settings to show subcategories instead of products.
  4. I’ve tried creating pages for the subcategories while having a working Product page, but the subcategory page still returns a 404.
  5. I’ve tried this SO attempt with no luck.

What am I doing wrong or what part can I rewire to make this work?
So greatful for any hints or leads or answers. Thank you for reading this!

Answers:

Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. So please treat them as advisements. If you found the post helpful (or not), leave a comment & I’ll get back to you as soon as possible.

Method 1

I was able to resolve this with the following code which generates rewrite_rules for each subcategory, which is preferred during matching since it’s more specific:

function wpse_291143_generate_taxonomy_rewrite_rules( $wp_rewrite ) {

    global $wp_rewrite;
    $base = "shop";

    $rules = array();
    $terms = get_terms( array( 'taxonomy' => 'product_cat', 'hide_empty' => false ));

    foreach($terms as $term) {
        $term_children = get_terms( array(
            'taxonomy' => 'product_cat',
            'parent' => intval($term->term_id),
            'hide_empty' => false
            )
        );
        if($term_children) {
            foreach ( $term_children as $term_child ) {
                $rules[$base . '/' . $term->slug . '/' . $term_child->slug . '/?$'] = 'index.php?product_cat=' . $term_child->slug;
            }
        }
    }

    $wp_rewrite->rules = $rules + $wp_rewrite->rules;
    return $wp_rewrite->rules;
}

add_action('generate_rewrite_rules', 'wpse_291143_generate_taxonomy_rewrite_rules');


All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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