检测第一级、第二级还是第三级自定义页面？

我有一个自定义的分级帖子类型。我有3个级别的页面，我需要一种方法来检测我是在顶级、第二级还是第三级。我对此进行了研究，只能找到使用is\\u page（）的示例，但显然这不适用于CPT。

function nldf_gallery() {
    $labels = array(
        \'name\'               => \'NLDF\',
        \'singular_name\'      => \'NLDF\',
        \'add_new\'            => \'Add New\',
        \'add_new_item\'       => \'Add New NLDF\',
        \'edit_item\'          => \'Edit NLDF\',
        \'new_item\'           => \'New NLDF\',
        \'all_items\'          => \'All NLDF\',
        \'view_item\'          => \'View NLDF\',
        \'search_items\'       => \'Search NLDF\',
        \'not_found\'          => \'No NLDF found\',
        \'not_found_in_trash\' => \'No NLDF found in Trash\',
        \'menu_name\'          => \'NLDF\'
    );

    $args = array(
        \'labels\'             => $labels,
        \'public\'             => true,
        \'hierarchical\'       => true,
        \'has_archive\'        => false,
        \'menu_position\'      => 4,
        \'menu_icon\'          => \'dashicons-format-gallery\',
        \'supports\'           => array(\'title\',\'editor\',\'comments\',\'revisions\',\'page-attributes\')
    );

    register_post_type(\'nldf\', $args);

}
add_action(\'init\', \'nldf_gallery\');

OR - 为每个级别的页面使用不同模板的方法

<?php // single-nldf.php // Template for displaying single NLDFs $level = count( get_ancestors( get_queried_object_id(), \'nldf\' ) ); add_filter(\'body_class\',\'nldf_page_class_names\'); function nldf_page_class_names($classes) { // add \'class-name\' to the $classes array $classes[] = \'single-nldf-\' . $level; // return the $classes array return $classes; } get_header( \'nldf-\' . $level ); // loads header-nldf-0.php, header-nldf-1.php or header-nldf-2.php get_template_part( \'loop\', \'nldf-\' . $level ); // loads loop-nldf-0.php, loop-nldf-1.php or loop-nldf-2.php get_footer( \'nldf-\' . $level ); // loads footer-nldf-0.php, footer-nldf-1.php or footer-nldf-2.php

rewrite rules hierarchical

我希望我的WordPress遵循以下规则：/productes/ 包含所有产品的页面/productes/[category]/ 包含该类别所有产品的分类页面/productes/[category]/[subcategory]/ 包含该类别所有产品（与2相同）的分类页面/[productes]/[category]/[product]/ A.single-productes.php 将显示类别产品/[productes]/[category]/[subcategory]/[product]/ A.sin

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rewrite rules hierarchical