Why can't I select a post type when editing posts?

Created by Phil Kurth, Modified on Thu, 30 Jun, 2022 at 10:20 AM by Phil Kurth

When using a form to create or edit posts, you may find not all post types appear in the Post type field.

If this is the case, the post type likely has the `show_ui` argument defined as FALSE. e.g;

add_action( 'init', function () {

  register_post_type( 'my_post_type', [
    'public' => false,
    'show_ui' => false, // Setting this to TRUE will ensure the post type appears. If not defined, the `public` value will be used as the default.
    …
  ] );

} );

Setting `show_ui` as TRUE will make the post type available for editing to Advanced Forms Pro. Note that if `show_ui` is not defined on the post type registration, the property defaults to the value assigned to the `public` argument.