我正在尝试更改woocommerce产品url的默认结构，以包含作者用户名。在我的安装中，woocommerce产品的默认url如下所示：

https://<site_url>/product/<product-name>

我想把它改成这样：

https://<site_url>/product/<author-username>/<product-name>

这是我目前掌握的代码：

function so_pre_get_posts( $query ) {
    // check if the user is requesting an admin page
    // or current query is not the main query
    if ( is_admin() || ! $query->is_main_query() ){
        return;
    }
  //since the author is not included in woocommerce query vars add author username to query_vars
  $post_type = get_query_var( \'post_type\' );
  if($post_type === \'product\'){
    $post_name = get_query_var( \'name\');
    if ( $post = get_page_by_path($post_name,OBJECT,\'product\') ){
      $id = $post->ID;
      $author_id = get_post_field( \'post_author\', $id );
      $author = get_userdata($author_id);
      $author_username = $author->user_login;
      $query->set( \'seller\',$author_username);
    }else{
      return;
    }
  }
}

//add rewrite rules
function so_rewrite_tag_rule() {
  add_rewrite_tag( \'%seller%\', \'([^&]+)\' );
    add_rewrite_rule(\'^product/([^/]+)/([^/]+)/?$\', \'index.php?seller=$matches[1]&name=$matches[2]\',\'top\');
  flush_rewrite_rules();
}
add_action( \'pre_get_posts\', \'so_pre_get_posts\', 1 );
add_action(\'init\', \'so_rewrite_tag_rule\', 10, 0);

然而，当我访问任何产品的产品页面时，它仍然解析为默认的woocommercepermalink结构。我确保刷新代码中的永久链接，所以我不知道问题出在哪里。

// replace %author%

add_filter( \'post_type_link\', \'wpse_post_type_link\', 20, 2 );

function wpse_post_type_link( $permalink, $post ) {
    if ( \'product\' === $post->post_type && false !== strpos( $permalink, \'%author%\' ) ) {
        $author = get_the_author_meta( \'user_nicename\', $post->post_author );
        $permalink = str_replace( \'%author%\', $author, $permalink );
    }

    return $permalink;
}