Make sure you don’t leave any space after “template name” and full column. Right <?php /* Template Name: About */ ?> Wrong <?php /* Template Name : About */ ?>
From the source code the function wp_dropdown_pages uses get_pages() and this function uses different attributes than WP_Query or get_posts(). It uses authors instead of author. Note from the codex: authors (string) Only include the Pages written by the given author(s) Note: get_posts() uses the parameter ‘author’ instead of ‘authors’.
You can add page-attributes support to the post type. This will cause a meta box to appear with an “order” field to do just what you want. eg. <?php add_post_type_support(‘your_custom_post_type’, ‘page-attributes’); Or you add page-attributesto the supports argument in register_post_type.
So far it seems there is no native way to do it in WordPress, correct me if I am wrong. If you are okay with using plugins there is Custom Post Template that you could try.
You can use the page_attributes_dropdown_pages_args filter to remove whatever you want. It’s based off of the wp_dropdown_pages() arguments so you can use the exclude parameter to remove certain pages or a fake parent to remove all the pages: /** * Filter the arguments of Page Attributes Parent Dropdown * * @param Array $args – List … Read more
Page attributes missing
How to use Custom Page Templates for hierarchical Custom Post Type
How to list all WC products by their attributes values?
So, it appears that I was correct that the issue was that the id “page_template” was no longer being passed. To solve this, all I have done is applied some Javascript (using the admin_enqueue_scripts function) which adds the id “page_template” to the radio button that has been selected.
How can I set different html lang attribute for different countries?