I have registered a custom post type named “cyc_exhibitor” and registered a custom field for that post type named “_cyc_exhibitor_first_name”. When I do a get call to the API (/wp-json/wp/v2/exhibitor/), the “_cyc_exhibitor_first_name” is shown in the meta node, but if I try to create a new exhibitor with a post call, I get the following error response:

“Sorry, you are not allowed to edit the _cyc_exhibitor_first_name custom field.”

I’m assuming the field is registered properly, since it appears in the get call response, but I can’t figure out why I can’t edit it. Here is the code for the custom post type:

function cyc_register_exhibitor_post_type () {
  $labels = array (
    'name' => __( 'Exhibitors' , CYC_EVENTS_DOMAIN),
    'singular_name' => __( 'Exhibitor', CYC_EVENTS_DOMAIN ),
    'add_new' => __( 'Add New Exhibitor', CYC_EVENTS_DOMAIN),
    'add_new_item' => __( 'Add New Exhibitor', CYC_EVENTS_DOMAIN),
    'not_found' => __( 'No Exhibitors Found', CYC_EVENTS_DOMAIN),
  );

  $args = array (
    'labels' => $labels,
    'public' => true,
    'rewrite' => array(
      'has_front' => true,
      'slug' => 'exhibitor'
    ),
    'show_in_menu' => 'edit.php?post_type=cyc_session',
    'menu_position' => 1000,
    'menu_icon' => 'dashicons-businessperson',
    'show_in_nav_menus' => false,
    'supports' => array(
      'title',
      'editor',
      'thumbnail',
      'custom-fields',
    ),
    'show_in_rest' => true,
    'rest_base' => 'exhibitor',
    'rest_controller_class' => 'WP_REST_Posts_Controller'
  );

  register_post_type ( 'cyc_exhibitor', $args );
}

// Register meta fields for use in API
// First name
$meta_args = array(
  'type'     => 'string',
  'single'       => true,
  'show_in_rest' => true,
);
register_post_meta( 'cyc_exhibitor', '_cyc_exhibitor_first_name', $meta_args );

And here is the JSON for the post call to /wp-json/wp/v2/exhibitor/:

{
   "title": "Brad Johnson",
   "slug": "brad johnson",
   "status": "publish",
   "meta": {
      "_cyc_exhibitor_first_name": "Brad"
   }
}

Any help would be greatly appreciated.

• This topic was modified 1 year ago by mcarlson64.