以编程方式添加附件会设置错误的永久链接

我有几百个PDF,我尝试用Wordpress编程上传它们,并将它们附加到带有高级自定义字段的自定义文章类型中。

这是我创建附件的代码的一部分

function update_attachment( $f, $pid, $file_url ){
        
    wp_update_attachment_metadata( $pid, $f );
    
    if( empty( $file_url ) ) 
        return false;

    $wp_upload_dir = wp_upload_dir();
    $filetype = wp_check_filetype( basename( $file_url ), null );

    // Prepare an array of post data for the attachment.
    $attachment = array(
        'guid'           => $wp_upload_dir['url'] . '/' . basename( $file_url ), 
        
        'post_parent'    => $pid,
        'post_title'     => preg_replace( '/\.[^.]+$/', '', basename( $file_url ) ),
        'post_type'      => 'attachment',
        'post_content'   => '',
        'post_status'    => 'inherit',
        'post_mime_type' => $filetype['type'],
    );

      $attach_id = wp_insert_attachment( $attachment, $file_url );

    return array(
        'pid' => $pid,
        'url' => $file_url,
        'attach_id' => $attach_id
    );

}

//create the custom post type
$post_id = wp_insert_post(array (
    'post_type' => 'resources',
    'post_title' => $file['Title'],
    'post_status' => 'publish',
    'comment_status' => 'closed',  
    'ping_status' => 'closed',   
));

//Create the attachment in Media
$att = update_attachment( 'file', $post_id , 'migration/' . $file['FileName'] );

//Save the attachment to the ACF field
update_field('field_5eeb34e23731c', $att['attach_id'], $post_id );

这个 $file 变量是我在此代码之前创建的数组,它包含pdf的信息。

帖子是用正确的附件创建的。但是,媒体文件的永久链接是我创建的帖子中的永久链接。

mydomain.org/resources/filename/‎

所以,当我打开url时 mydomain.org/wp-content/uploads/migration/filename.pdf