wordpress Rest api Post properties中的圖像鏈接

Question

由於衆所周知，wordpress rest api的工作原理是任何文章的Get請求都會爲我們提供一個包含featured_media屬性的帖子，用於成像目的。 我有一種情況，我需要得到100個帖子，我用'wp-json/wp/v2/posts？per_page = 100'這樣做很容易，它運行良好，但問題是我需要獲取圖像每篇文章也是。要做到這一點，我必須爲每個帖子提出每個額外的請求以獲得其圖像....所以要獲得100個帖子，我必須發送101個請求，這是可怕的資源浪費和時間浪費。 我應該怎麼做才能在Post屬性中包含圖像鏈接來保存我的100個請求，並且只需要一個請求即可完成所有操作。 謝謝

Answer 1

您需要修改REST API響應內容 - 它可以包含您想要的信息。

這是我的例子之一，其中我想包括自定義字段值：

add_action('rest_api_init', 'slug_register_embed_youtube'); 
// "venue" is a custom post type I created using the WP Types plugin 
function slug_register_embed_youtube() { 
    // first register the field with WP REST API 
    register_rest_field('venue', 
     'meta_data', 
     array(
      'get_callback' => 'venue_get_meta', 
      'update_callback' => null, 
      'schema'   => null, 
     ) 
    ); 
} 

function venue_get_meta($post, $field_name, $request) { 
    // I wanted the value to appear in the response as "youtube_embed", 
    // and I wanted the "wpcf-youtube-embed" custom field's value there 
    $meta_data = array(
     'youtube_embed' => get_post_meta($post[ "id" ], 'wpcf-youtube-embed')[ 0 ], 
    ); 
    return $meta_data; 
} 

上面的代碼修改的響應：

{ 
    "id": 20, 
    "date": "2016-06-08T16:37:23", 
    "date_gmt": "2016-06-08T16:37:23", 
    "guid": { 
     "rendered": "http://www.example.com/wp/?post_type=venue&p=20" 
    }, 
    "modified": "2016-06-20T11:45:22", 
    "modified_gmt": "2016-06-20T11:45:22", 
    "slug": "aquarium-club", 
    "type": "venue", 
    "link": "http://www.example.com/wp/venue/aquarium-club/", 
    "title": { 
     "rendered": "Aquarium Club" 
    }, 
    "content": { 
     "rendered": "<p>Aquarium Club. That&#8217;s OK. 7765e546uzfkjglh</p>\n<p>&nbsp;</p>\n<style>\n.gmap-iframe-container {\nmax-width: 100%;\n}\n.gmap-iframe {\nwidth: 100%;\nheight: 200px;\nmin-width:100%;\n}\n</style>\n<div class=\"gmap-iframe-container\">\n<iframe src=\"https://www.google.com/maps/embed?pb=!1m18!1m12!1m3!1d2695.565888030695!2d19.052103115616678!3d47.49836967917771!2m3!1f0!2f0!3f0!3m2!1i1024!2i768!4f13.1!3m3!1m2!1s0x4741dc402a04eee3%3A0x6869564cd433693c!2sAkv%C3%A1rium+Klub!5e0!3m2!1shu!2shu!4v1466147278469\" frameborder=\"0\" style=\"border:0\" allowfullscreen class=\"gmap-iframe\"></iframe></p>\n" 
    }, 
    "excerpt": { 
     "rendered": "<p>Aquarium Club. That&#8217;s OK. 7765e546uzfkjglh &nbsp;</p>\n" 
    }, 
    "featured_media": 0, 
    "menu_order": 0, 
    "format": "standard", 
    "tags": [], 
    "meta_data": { 
     "youtube_embed": "https://www.youtube.com/embed/xBW7DglTDGs" 
    }, 
    "_links": { 
     "self": [ 
     { 
      "href": "http://www.example.com/wp/wp-json/wp/v2/venue/20" 
     } 
     ], 
     "collection": [ 
     { 
      "href": "http://www.example.com/wp/wp-json/wp/v2/venue" 
     } 
     ], 
     "about": [ 
     { 
      "href": "http://www.example.com/wp/wp-json/wp/v2/types/venue" 
     } 
     ], 
     "wp:attachment": [ 
     { 
      "href": "http://www.example.com/wp/wp-json/wp/v2/media?parent=20" 
     } 
     ], 
     "wp:term": [ 
     { 
      "taxonomy": "post_tag", 
      "embeddable": true, 
      "href": "http://www.example.com/wp/wp-json/wp/v2/tags?post=20" 
     } 
     ], 
     "curies": [ 
     { 
      "name": "wp", 
      "href": "https://api.w.org/{rel}", 
      "templated": true 
     } 
     ] 
    } 
    }, 

注意，我有此

"meta_data": { 
    "youtube_embed": "https://www.youtube.com/embed/xBW7DglTDGs" 
}, 

「tags」數組之後。

你可以找到修改WP REST API V2這裏響應的所有信息：http://v2.wp-api.org/extending/modifying/