我正在尝试更改自定义帖子类型帖子的url结构，但目前无法正常工作。

我想做的是通过函数更改自定义帖子类型（测试）帖子的URL。php。通过使用post\\u type\\u link和add\\u rewrite\\u rule，我想将%hallo%重写为自定义字段值（通过使用get\\u post\\u meta）。我希望有人能帮我解决这个问题。我已经尝试了几十种方法，但仍然不起作用。

在管理方面，我现在的工作正常。它以我希望的方式显示URL（domain.com/test/mycustomfieldvalue/post title/）。当我想在前端查看页面时，就会出现问题。我得到一个400 Bad Request error 我可以看到我的url已更改为domain.com/test/%hallo%/post-title/.

Note: 我知道在更改URL时需要刷新重写规则。我现在经常使用flush\\u rewrite\\u rules（）进行测试，所以这不是问题所在。

请看下面我的代码。

My custom post type

add_action( \'init\', \'cpt_test_init\' );

function cpt_test_init() {

    $labels = array(
        \'name\'               => _x( \'Test\', \'post type general name\', \'mytheme\' ),
        \'singular_name\'      => _x( \'Test\', \'post type singular name\', \'mytheme\' ),
        \'menu_name\'          => _x( \'Test\', \'admin menu\', \'mytheme\' ),
        \'name_admin_bar\'     => _x( \'Test\', \'add new on admin bar\', \'mytheme\' ),
        \'add_new\'            => _x( \'Nieuwe test toevoegen\', \'faq\', \'mytheme\' ),
        \'add_new_item\'       => __( \'Nieuwe test toevoegen\', \'mytheme\' ),
        \'new_item\'           => __( \'Nieuwe test\', \'mytheme\' ),
        \'edit_item\'          => __( \'Test aanpassen\', \'mytheme\' ),
        \'view_item\'          => __( \'Bekijk test\', \'mytheme\' ),
        \'all_items\'          => __( \'Alle test\', \'mytheme\' ),
        \'search_items\'       => __( \'Test zoeken\', \'mytheme\' ),
        \'parent_item_colon\'  => __( \'Bovenliggend item:\', \'mytheme\' ),
        \'not_found\'          => __( \'Geen test gevonden.\', \'mytheme\' ),
        \'not_found_in_trash\' => __( \'Geen test gevonden in de prullenbak.\', \'mytheme\' )
    );

    $args = array(
        \'labels\'             => $labels,
        \'description\'        => __( \'Description.\', \'mytheme\' ),
        \'public\'             => true,
        \'publicly_queryable\' => true,
        \'show_ui\'            => true,
        \'show_in_menu\'       => true,
        \'query_var\'          => true,
        \'rewrite\'            => array( \'slug\' => \'test/%hallo%\', \'with_front\' => false ),
        \'capability_type\'    => \'post\',
        \'has_archive\'        => false,
        \'hierarchical\'       => false,
        \'menu_position\'      => NULL,
        \'supports\'           => array( \'title\', \'revisions\' )
    );

    register_post_type( \'test\', $args );
}

How I\'m trying to change the urls

function change_test_links( $post_link, $post, $leavename ) {
    if ( is_object( $post ) && $post->post_type == \'test\' ) {
        $metaText = get_post_meta(get_the_ID(), \'test_text_field\', true);
        if ( $metaText ) {
            return str_replace( \'%hallo%\', $metaText, $post_link );
        }
    }
    return $post_link;
}
add_filter( \'post_type_link\', \'change_test_links\', 1, 3 );

function test_rewrite_rules() {
    add_rewrite_rule(
        \'^test/(.*)/(.*)/?$\',
        \'index.php?post_type=test&name=$matches[2]\',
        \'top\'
    );
}
add_action( \'init\', \'test_rewrite_rules\' );

我真的希望有人能帮我。我觉得我很接近，或者我错过了一些简单的事情。提前感谢！

Edit: 当我尝试将%hallo%重写为硬编码字符串（例如“mynewtext”）时，一切都正常。所以我猜我的问题是使用get\\u post\\u meta。

是否有效：

return str_replace( \'%hallo%\', \'mynewtext\', $post_link );

不起作用：

$metaText = get_post_meta(get_the_ID(), \'test_text_field\', true);
return str_replace( \'%hallo%\', $metaText, $post_link );

$metaText = get_post_meta( $post->ID, \'test_text_field\', true);