如何在WP woocommerce中按更多字段排序？

add_filter('woocommerce_get_catalog_ordering_args', 'custom_woocommerce_catalog_orderby');

function custom_woocommerce_catalog_orderby($args)
{
    $orderby_value = isset($_GET['orderby']) ? wc_clean($_GET['orderby']) : apply_filters('woocommerce_default_catalog_orderby', get_option('woocommerce_default_catalog_orderby'));

    if ('custom_field' == $orderby_value) {
        $args['orderby'] = 'meta_value_num';
        $args['order'] = 'desc';
        $args['meta_key'] = 'custom_field'; // 替换为你创建的自定义字段的名称
    }

    return $args;
}

<form class="woocommerce-ordering" method="get">
    <select name="orderby" class="orderby">
        <option value="menu_order" <?php selected($orderby, 'menu_order'); ?>><?php _e('Default sorting', 'woocommerce'); ?></option>
        <option value="popularity" <?php selected($orderby, 'popularity'); ?>><?php _e('Sort by popularity', 'woocommerce'); ?></option>
        <option value="rating" <?php selected($orderby, 'rating'); ?>><?php _e('Sort by average rating', 'woocommerce'); ?></option>
        <option value="date" <?php selected($orderby, 'date'); ?>><?php _e('Sort by newness', 'woocommerce'); ?></option>
        <option value="price" <?php selected($orderby, 'price'); ?>><?php _e('Sort by price: low to high', 'woocommerce'); ?></option>
        <option value="price-desc" <?php selected($orderby, 'price-desc'); ?>><?php _e('Sort by price: high to low', 'woocommerce'); ?></option>
        <option value="custom_field" <?php selected($orderby, 'custom_field'); ?>><?php _e('Sort by custom field', 'woocommerce'); ?></option> // 添加这一行代码
    </select>
    <input type="hidden" name="paged" value="1" />
    <?php wc_query_string_form_fields(null, array('orderby', 'submit', 'paged', 'product-page')); ?>
</form>