1,858 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:
| <?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; |