Make WooCommerce products purchasable by category

purchasable-by-category.php

add_action('wp', 'prefix_theme_setup', 99);


function prefix_theme_setup()
{
    add_filter( 'woocommerce_is_purchasable', 'prefix_is_purchasable', 20, 2);
}


function prefix_is_purchasable($purchasable, $product)
{
        $user = wp_get_current_user();
        
        $user_meta = get_user_meta( $user->id );
        
        
        if(str_replace(' ', '', $user_meta['billing_postcode']) == '12312')
        {
            return true;
        }
        return false;
/*

    $not_purchasable_cat_ids = array(5, 8, 9, 11);

    $categories = get_the_terms($product->ID, 'product_cat');
   
    foreach($categories AS $category)
    {
        if( in_array( $category->term_id, $not_purchasable_cat_ids ) )
        {
            return false;
        }
        return true;
    }
    

    /*
    //Get ID of root category. If the product is in this caregory or any ancestors to this category it will be purchasable
    $store_root_cat_id = 5;
    //$store_root_cat_id = get_store_root_category_id();
    
    $categories = wp_get_post_terms($product->ID, 'product_cat');
    foreach($categories AS $category)
    {
        if(term_is_ancestor_of($store_root_cat_id, $category, 'product_cat'))
        {
            return true;
        }
    }
    
    return false;
    */
}