如何在wordpress中更改分类URL

跟随this question 和this one

但却无法得到预期的结果。

The default is:

example.com/project_category/%category%/

What I want is:

example.com/stainless-steel-products/%category%/

我已经更改了项目档案的slug，以便example.com/stainless-steel-products/ 是项目档案。

下面是用于实现该目标的代码。

// Change peralinks projects
function custom_project_slug () {
    return array(
    \'feeds\' => true,
    \'slug\' => \'stainless-steel-products\',
    \'with_front\' => false,
    );
}
add_filter( \'et_project_posttype_rewrite_args\', \'custom_project_slug\' );

?>

如何更改项目类别的slug，使其成为项目归档的子级？提前感谢您的帮助！

add_filter( \'register_taxonomy_args\', \'change_taxonomies_slug\', 10, 2 );
function change_taxonomies_slug( $args, $taxonomy ) {

   if ( \'project_category\' === $taxonomy ) {
      $args[\'rewrite\'][\'slug\'] = \'stainless-steel-products\';
   }

   return $args;
}