1,890 views 
Add post meta in post (custom post type) endpoint with Rest API.
Todo: Todo:
- Change
post-typewith your post type slug. - Change
prefix-meta-keywith your post meta key which you want to include in Rest API Response.
Output: Output:
Visit https://<mysite>/wp-json/wp/v2/<post-type>/ it show the stored data from meta key prefix-meta-key in the Rest API response.
Code: Code:
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <?php | |
| /** | |
| * Add post meta in post (custom post type) endpoint with rest api. | |
| * | |
| * @todo Change `post-type` with your post type slug. | |
| * @todo Change `prefix-meta-key` with your post meta key which you want to include in Rest API Response. | |
| * | |
| * @package Prefix | |
| * @since 1.0.0 | |
| */ | |
| if ( ! class_exists( 'Prefix_Rest_API' ) ) : | |
| /** | |
| * Prefix Rest API | |
| * | |
| * @since 1.0.0 | |
| */ | |
| class Prefix_Rest_API { | |
| /** | |
| * Instance | |
| * | |
| * @access private | |
| * @var object Class object. | |
| * @since 1.0.0 | |
| */ | |
| private static $instance; | |
| /** | |
| * API Request Start Time | |
| * | |
| * @access private | |
| * @var string Start time. | |
| * @since 1.0.0 | |
| */ | |
| private static $start_time; | |
| /** | |
| * Initiator | |
| * | |
| * @since 1.0.0 | |
| * @return object initialized object of class. | |
| */ | |
| public static function get_instance() { | |
| if ( ! isset( self::$instance ) ) { | |
| self::$instance = new self; | |
| } | |
| return self::$instance; | |
| } | |
| /** | |
| * Constructor | |
| * | |
| * @since 1.0.0 | |
| */ | |
| public function __construct() | |
| { | |
| add_action( 'rest_api_init', array( $this, 'meta_in_rest' ) ); | |
| } | |
| /** | |
| * Add Extra Fields in Rest | |
| * | |
| * @since 1.0.0 | |
| * | |
| * @return void | |
| */ | |
| public function meta_in_rest() { | |
| // Start logging how long the request takes for logging. | |
| self::$start_time = microtime( true ); | |
| register_rest_field( | |
| 'post-type', | |
| 'prefix-meta-key', | |
| array( | |
| 'get_callback' => array( $this, 'get_post_meta' ), | |
| 'schema' => null, | |
| ) | |
| ); | |
| // Request Time. | |
| register_rest_field( | |
| 'post-type', | |
| 'request_time', | |
| array( | |
| 'get_callback' => array( $this, 'get_api_request_time' ), | |
| 'schema' => null, | |
| ) | |
| ); | |
| } | |
| /** | |
| * Get Site URL | |
| * | |
| * @since 1.0.0 | |
| * | |
| * @param string $object Rest Object. | |
| * @param string $field_name Rest Field. | |
| * @param array $request Rest Request. | |
| * @return string Post Meta. | |
| */ | |
| public function get_post_meta( $object = '', $field_name = '', $request = array() ) | |
| { | |
| return get_post_meta( $object['id'], $field_name, true ); | |
| } | |
| /** | |
| * Set API request Time | |
| * | |
| * @since 1.0.0 | |
| * @param string $object Rest Object. | |
| * @param string $field_name Rest Field. | |
| * @param array $request Rest Request. | |
| * @return mixed Null or Site Featured Image. | |
| */ | |
| public function get_api_request_time( $object = '', $field_name = '', $request = array() ) | |
| { | |
| // End time of logging. | |
| $end_time = microtime( true ); | |
| return ( $end_time – self::$start_time ); | |
| } | |
| } | |
| /** | |
| * Kicking this off by calling 'get_instance()' method | |
| */ | |
| Prefix_Rest_API::get_instance(); | |
| endif; |