如何在wordpress中为自定义端点请求应用分页？

// 注册自定义端点
add_action('rest_api_init', function () {
    register_rest_route('myplugin/v1', '/custom-endpoint/', array(
        'methods' => 'GET',
        'callback' => 'my_custom_endpoint_callback',
    ));
});

// 自定义端点回调函数
function my_custom_endpoint_callback($request) {
    $params = $request->get_params();

    // 解析请求参数
    $page = isset($params['page']) ? intval($params['page']) : 1;
    $per_page = isset($params['per_page']) ? intval($params['per_page']) : 10;

    // 执行查询
    $query = new WP_Query(array(
        'post_type' => 'post',
        'posts_per_page' => $per_page,
        'paged' => $page,
    ));

    // 处理分页数据
    $posts = $query->posts;
    $total_pages = $query->max_num_pages;

    // 构建分页响应数据
    $response = array(
        'page' => $page,
        'per_page' => $per_page,
        'total_pages' => $total_pages,
        'posts' => array(),
    );

    foreach ($posts as $post) {
        // 提取所需的文章数据
        $post_data = array(
            'id' => $post->ID,
            'title' => $post->post_title,
            'content' => $post->post_content,
        );

        // 将文章数据添加到分页响应数据中
        $response['posts'][] = $post_data;
    }

    // 返回分页响应数据
    return rest_ensure_response($response);
}