What should write for display_name? I want to display author name in custom post types, but I got administrater name ‘root’ for get_the_author() function and when I used get_the_auther_meta(), I couldn’t get anything. If anyone knows please let me know.
What I did wrong is, I forget to get author box, hence the_author function was not working, so I add this code in functions.php file
add_post_type_support( 'my_post_type', array( 'author', 'excerpt', ) );
then I got author box and in author box, set author name and add this code in custom post file