在 Wordpress 中，post_parent 返回 0 [英] In Wordpress, post_parent returns 0

问题描述

我刚刚开始定制我自己的 Wordpress 网站.我在 PHP 编程方面有一些经验，但我无法让这个工作.

I just started customizing my own Wordpress website. I have some experience in PHP programming, but I can't get this one to work.

使用 wp-types 插件，我创建了父子关系.当我请求父的 ID 时，它总是返回零:

With the wp-types plugin I created a parent-children relationship. When I request the ID of the parent, it always returns zero:

echo "Parent PostID: " . $post->post_parent . "<br>";

wp_get_post_parent_id 函数也是如此.

This is the same for the wp_get_post_parent_id function.

非常感谢您的帮助.

推荐答案

post_parent 是 WordPress 的核心功能，与 Types 插件中设置的父子关系无关.(类型中的关系存储在帖子的自定义字段中.)

The post_parent is a WordPress core feature, and isn't related to the parent-child relationships set up in the Types plugin. (The relationship in Types is stored in custom fields on the posts.)

A 类型支持论坛上的帖子建议 建议使用此方法在类型中查找帖子的父级:

A post on the Types support forum suggests suggests this method for finding the parent of a post in Types:

$parent_id = wpcf_pr_post_get_belongs(get_the_ID(), 'parent-type-slug');
if (!empty($parent_id)) {
  $parent = get_post($parent_id);
}

(反过来会更容易一些，因为有一个 types_child_posts 方法，用于返回帖子的类型子级.)

(It's slightly easier to go the other way around, as there's a types_child_posts method for returning the Types children of a post.)

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