我有一个带有层次分类法的自定义帖子类型。permalink结构如下：

www.mysite.com/post_type/taxonomy_term -> works (tax archive page)
www.mysite.com/post_type/taxonomy_term/post_name -> works (post page)
www.mysite.com/post_type/taxonomy_term/taxonomy_sub_term -> 404 error (sub tax archive page)
www.mysite.com/post_type/taxonomy_term/taxonomy_sub_term/post_name -> works (post page)

具有重要设置的自定义post类型函数（从CPT UI输出）：

$args = array(
    "has_archive" => true,
    "hierarchical" => false,
    "rewrite" => array( 
         "slug" => "diensten", 
         "with_front" => false 
     ),
    "taxonomies" => array( "dienst_categorie" ),
);

register_post_type( "diensten", $args );

具有重要设置的分类功能（从CPT UI输出）：

$args = array(
    "hierarchical" => true,
    "rewrite" => array( 
        \'slug\' => \'diensten\', 
        \'with_front\' => false,  
        \'hierarchical\' => true,
    ),
);
register_taxonomy( "dienst_categorie", array( "diensten" ), $args );

使用一些基于this website 我得到了以下代码：

function resources_cpt_generating_rule( $wp_rewrite ) {
    $rules = array();

    $post_type_diensten = \'diensten\';
    $terms_diensten = get_terms( array(
        \'taxonomy\' => \'dienst_categorie\',
        \'hide_empty\' => false,
    ) );
    foreach ( $terms_diensten as $term ) {
        if ( $term->parent > 0 ) {
            $pterm = get_term( $term->parent, \'dienst_categorie\' );
            // The line below doesn\'t work as expected.
            $rules[ \'diensten/\' . $pterm->slug . \'/\' . $term->slug . \'/?$\'  ] = \'index.php?taxonomy=dienst_categorie&term=\' . $term->slug;
            $rules[ \'diensten/\' . $pterm->slug . \'/\' . $term->slug . \'/([^(/)]*)$\' ] = \'index.php?post_type=\' . $$post_type_diensten . \'&\' . $post_type_diensten . \'=$matches[1]&name=$matches[1]\';
        } else {
            $rules[ \'diensten/\' . $term->slug . \'/([^/]*)$\' ] = \'index.php?post_type=\' . $post_type_diensten . \'&\' . $post_type_diensten . \'=$matches[1]&name=$matches[1]\';
        }

        // This line works, but is not dynamic.
        $rules[ \'diensten/zonwering/zonweringreparaties/?$\' ] = \'index.php?taxonomy=dienst_categorie&term=zonweringreparaties\';
    }
}
add_filter( \'generate_rewrite_rules\', \'resources_cpt_generating_rule\' );

function change_link( $permalink, $post ) {
    if ( \'diensten\' === $post->post_type ) {
        $resource_terms = get_the_terms( $post, \'dienst_categorie\' );
        if ( ! empty( $resource_terms ) ) {
            foreach ( $resource_terms as $term ) {
                if ( \'featured\' === $term->slug ) {
                    continue;
                }

                if ( $term->parent > 0 ) {
                    $pterm = get_term( $term->parent );
                    $permalink = get_home_url() . \'/diensten/\' . $pterm->slug . \'/\' . $term->slug . \'/\' . $post->post_name;
                } else {
                    $permalink = get_home_url() . \'/diensten/\' . $term->slug . \'/\' . $post->post_name;
                }
                break;
            }
        }
        return $permalink;
    }
}
add_filter( \'post_type_link\', \'change_link\', 10, 2 );

请注意注释的行。一个是硬编码的，另一个是动态的，并且基于模板中的测试，动态的一个输出与硬编码的相同的代码，但它不起作用。我怀疑这与regex模式有关，但我不知道为什么。

我的问题是：要根据术语/子术语url层次结构访问子术语的归档页面，正确的重写规则是什么？