WP REST API 自定义端点如何 return 自定义 post 数据?

How WP REST API custom endpoint could return custom post data?

TL;DR: 如何选择 WP REST API 自定义端点响应的每一位信息?

长版

如果我想使用 WP REST API 构建自定义端点 - 发送来自不同 post 类型的特定 post 数据 - 按照 Handbook 中的示例,我得到了这个:

function custom_endpoint ( $data ) {
    $posts = get_posts( array(
        'numberposts'   => -1,
        'post_type'     => array('event', 'post'),
    ) );

    if ( empty( $posts ) ) {
        return null;
    }

    return $posts;
}


add_action( 'rest_api_init', function () {
    register_rest_route( 'wp/v1', '/custom-endpoint/', array(
        'methods' => 'GET',
        'callback' => 'custom_endpoint',
    ) );
} );

但是 get_post() 函数没有 return 一些非常有用的数据,如果你想在你的页面中显示 posts(类别 id,精选图像,例如)。那么我如何构建一个 returns:

的自定义端点

作为WP Codex states访问所有数据:

访问所有 post 数据 某些 post-related 数据 不可用 到 get_posts。

您可以通过以下方式获得它们:

$posts = get_posts( array(
        'numberposts'   => -1,
        'post_type'     => array('event', 'post'),
    ) );

$response = [];
foreach ( $posts as $post ) {
  $response[] = [
    'content' => $post->CONTENT.
     'title' =>  $post->TITLE,
      .....
  ]
}

return $response; (in a WP way of constructing json responses)

根据@fsn 的回答,我得到以下想法:使用其他 Wordpress 函数获取 get_posts() returns 的对象并向其添加新的比例。

function custom_endpoint ( $data ) {
$posts = get_posts( array(
    'numberposts'   => -1,
    //Here we can get more than one post type. Useful to a home page.
    'post_type'     => array('event', 'post'), 
) );


if ( empty( $posts ) ) {
    return null;
}


$args = array();    

foreach ( $posts as $post ) {

 //Get informations that is not avaible in get_post() function and store it in variables.
   $category = get_the_category( $post->ID );
   $img_thumb = get_the_post_thumbnail_url( $post->ID, 'thumbnail' );       // Thumbnail (default 150px x 150px max)
   $img_medium = get_the_post_thumbnail_url( $post->ID, 'medium' );          // Medium resolution (default 300px x 300px max)
   $img_large = get_the_post_thumbnail_url( $post->ID, 'large' );           // Large resolution (default 640px x 640px max)
   $img_full = get_the_post_thumbnail_url( $post->ID, 'full' );            // Full resolution (original size uploaded)

 //Adds the informations to the post object.
   $post->category = $category; 
   $post->img_tumb = $img_thumb; 
   $post->img_medium = $img_medium; 
   $post->img_large = $img_large; 
   $post->img_full = $img_full;

   array_push($args, $post);
   }
return $args;
}
add_action( 'rest_api_init', function () {
  register_rest_route( 'wp/v1', '/custom-endpoint/', array(
    'methods' => 'GET',
    'callback' => 'custom_endpoint',
) );

});

工作正常!

感谢@fsn 的贡献。