Wsrtjtyk

I am trying to create a PowerApp in which I want to integrate the post meta fields. I inserted this code in the functions.php file. But I can read and write the data for default WordPress fields, but I am not able to update the post custom fields.

add_action( 'rest_api_init', 'create_api_posts_meta_field' );



function create_api_posts_meta_field() {



    // register_rest_field ( 'name-of-post-type', 'name-of-field-to-return', array-of-callbacks-and-schema() )

    register_rest_field( 'post', 'post-meta-fields', array(

           'get_callback'    => 'get_post_meta_for_api',

           'update_callback' => 'get_post_meta_update_for_api',

           'schema'          => null,

        )

    );

}



function get_post_meta_for_api( $object ) {

    //get the id of the post object array

    $post_id = $object['id'];



    //return the post meta

    return get_post_meta( $post_id );

}



function get_post_meta_update_for_api( $value, $object, $field_name ) {

    return update_post_meta( $object[ 'id' ], $field_name, $value );

}