我有三种不同的自定义帖子类型：

公司员工项目通过ACF关系字段连接，因此公司可以有多个员工，每个员工都可以附加一个项目。函数的作用是：检索附加的post对象，以创建某种关系。

我需要为这些CPT创建三个permalink结构：

对于公司：www.somepage.com/%company_name%www.somepage.com/%company_name%/%employee_name%www.somepage.com/%company_name%/%employee_name%/%project_name%我已经设法使用以下代码为它们设置永久链接结构：

function dd_custom_permalinks($permalink, $post, $leavename) {
    $post_id = $post->ID;
    if(($post->post_type != \'project\' && $post->post_type != \'employee\' && $post->post_type != \'company\') || empty($permalink) || in_array($post->post_status, array(\'draft\', \'pending\', \'auto-draft\')))
        return $permalink;

    if (get_field("employees", $post->ID)) {
        $permalink = str_replace(\'%company%\', $post->post_name, $permalink);
    } elseif (get_field("company", $post->ID)) {
        $permalink = str_replace(\'%company%\', get_field("company", $post->ID)[0]->post_name, $permalink);
        $permalink = str_replace(\'%employee%\', $post->post_name, $permalink);
    } elseif (get_field("employee", $post->ID)) {
        $employee= get_field("employee", $post->ID)[0];
        $company= get_field("company", $employee->ID)[0];
        $permalink = str_replace(\'%company%\', $company->post_name, $permalink);
        $permalink = str_replace(\'%employee%\', $employee->post_name, $permalink);
        $permalink = str_replace(\'%project%\', $post->post_name, $permalink);
    }

    return $permalink;
}
add_filter(\'post_type_link\', \'dd_custom_permalinks\', 10, 3);

问题是我找不到使它们有效的方法，因为该结构总是指向Company（自定义url结构的第一部分）。也许我必须以某种方式将进一步与CPT查询绑定？

我也尝试过使用自定义重写规则，但我不明白如何做到公平。以下是我到目前为止得到的结果（没有工作）：

function dd_custom_rewrite_rules() {
    add_rewrite_tag(\'%company%\', \'([^/]+)\', \'company=\');
    add_permastruct(\'company\', \'/%company%\', false);
    add_rewrite_rule(\'^company/([^/]+)/([^/]+)/?\',\'index.php?company=$matches[2]\',\'top\');

    add_rewrite_tag(\'%employee%\', \'([^/]+)\', \'employee=\');
    add_permastruct(\'employee\', \'/%company%/%employee%\', false);
    add_rewrite_rule(\'^employee/([^/]+)/([^/]+)/?\',\'index.php?employee=$matches[2]\',\'top\');
    
    add_rewrite_tag(\'%project%\', \'([^/]+)\', \'project=\');
    add_permastruct(\'project\', \'/%company%/%employee%/%project%\', false);
    add_rewrite_rule(\'^project/([^/]+)/([^/]+)/?\',\'index.php?project=$matches[2]\',\'top\');

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

有什么想法吗？我如何（或者是否）让它正常工作？

function dd_custom_rewrite_rules() {
    add_rewrite_tag(\'%company%\', \'([a-z0-9-]+)\', \'company=\');
    add_rewrite_tag(\'%employee%\', \'([a-z0-9-]+)\', \'employee=\');
    add_rewrite_tag(\'%project%\', \'([a-z0-9-]+)\', \'project=\');

    add_permastruct(\'project\', \'/company/%company%/%employee%/%project%\', false);
    add_permastruct(\'employee\', \'/company/%company%/%employee%\', false);
    add_permastruct(\'company\', \'/company/%company%\', false);

    add_rewrite_rule(\'^company[/]%company%[/]?\',\'index.php?company=$matches[1]\',\'top\');
    add_rewrite_rule(\'^company[/]([a-z0-9-]+)[/]([a-z0-9-]+)[/]?$\',\'index.php?employee=$matches[2]\',\'top\');
    add_rewrite_rule(\'^company[/]([a-z0-9-]+)[/]([a-z0-9-]+)[/]([a-z0-9-]+)[/]?$\',\'index.php?project=$matches[3]\',\'top\');

}