为什么Wordpress永久链接不起作用？

Question

在Wordpress中选择的永久链接结构为“ example.com/%postname%/”。类别为29的帖子应在https://example.com/dictionary/post-name/之前工作。请向我解释为什么此代码不起作用：

function dictionary_permalink($permalink, $post) {
    $category = get_the_category($post->ID);
  if (!empty($category) && $category[0]->cat_ID == 29) {
        $permalink = trailingslashit( home_url('/dictionary/'. $post->post_name . '/'));
  }
    return $permalink;
}
add_filter('post_link', 'dictionary_permalink', 20, 3);

function dictionary_rewrite() {
    add_rewrite_rule(
        '^dictionary/([^/]*)/?',
        'index.php?pagename=$matches[1]',
        'top'
    );
}
add_action('init', 'dictionary_rewrite');

页面“ example.com/dictionary/post-name/”显示404。当我输入“ example.com/index.php?pagename=post-name”时，页面将我重定向到“ example.com/post-name” /”（正确加载）