我试图显示自定义分类法的术语列表，但遇到了一些问题。自定义税是针对名为project.

我要做的是列出父项及其子项，例如：

绘画2013年，2012年，2011年，当您访问子术语的存档时，会出现相同的列表，显示父术语。

我已尝试使用wp_list_categories() 而且它有潜力，但我不知道如何为这些目的操纵它，这意味着当存档用于子术语时，不会显示父术语和所有其他子术语。

模板中的代码根本不起作用，它来自WP Codex示例。以下是模板代码：

  global $wp_query;
  $term = $wp_query->get_queried_object();
  $title = $term->name;                     
  $termID = $term->term_id;
  $taxonomy_name = $term->taxonomy;
  $termChildren = get_term_children( $termID, $taxonomy_name );

  echo $title;
  echo $termChildren;

  echo \'<ul>\';

  foreach ( $termChildren as $termChild ) {
    $term2 = get_term_by( \'id\', $termChild, $taxonomy_name );
    echo \'<li><a href="\' . get_term_link( $term2->name, $taxonomy_name ) . \'">\' . $term2->name . \'</a></li>\';
  }

  echo \'</ul>\';

为了更好地衡量，这里是海关税代码，以防我在那里做了蠢事：

add_action( \'init\', \'register_taxonomy_mediums\' );

function register_taxonomy_mediums() {

    $labels = array( 
        \'name\' => _x( \'Mediums\', \'mediums\' ),
        \'singular_name\' => _x( \'Medium\', \'mediums\' ),
        \'search_items\' => _x( \'Search Mediums\', \'mediums\' ),
        \'popular_items\' => _x( \'Popular Mediums\', \'mediums\' ),
        \'all_items\' => _x( \'All Mediums\', \'mediums\' ),
        \'parent_item\' => _x( \'Parent Medium\', \'mediums\' ),
        \'parent_item_colon\' => _x( \'Parent Medium:\', \'mediums\' ),
        \'edit_item\' => _x( \'Edit Medium\', \'mediums\' ),
        \'update_item\' => _x( \'Update Medium\', \'mediums\' ),
        \'add_new_item\' => _x( \'Add New Medium\', \'mediums\' ),
        \'new_item_name\' => _x( \'New Medium\', \'mediums\' ),
        \'separate_items_with_commas\' => _x( \'Separate mediums with commas\', \'mediums\' ),
        \'add_or_remove_items\' => _x( \'Add or remove mediums\', \'mediums\' ),
        \'choose_from_most_used\' => _x( \'Choose from the most used mediums\', \'mediums\' ),
        \'menu_name\' => _x( \'Mediums\', \'mediums\' ),
    );

    $args = array( 
        \'labels\' => $labels,
        \'public\' => true,
        \'show_in_nav_menus\' => true,
        \'show_ui\' => true,
        \'show_tagcloud\' => true,
        \'show_admin_column\' => true,
        \'hierarchical\' => true,
        \'has_archive\' => true,
        \'rewrite\' => true,
        \'query_var\' => true
    );

    register_taxonomy( \'mediums\', array(\'project\'), $args );
}