How to register a post type so I have archive page, but don't have single pages?

Question

I think the question is straight forward. I want to have archive page, but want the single pages gone. Is there a way with custom post type options?

Answer 1

You can force single queries to 404 like they don't exist.

function wpse67329_force_mycpt_single_404() {
  if ( is_single() && get_post_type() == 'mycpt' ) {
    global $wp_query;
    $wp_query->set_404();
    status_header('404');
  }
}

add_action( 'template_redirect', 'wpse67329_force_mycpt_single_404' );

Answer 2

The way I solve issues like that is that I just don't link to the single pages. So if there is no link, to the outside visitor it seems like there are no single posts.