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I wrote a plugin for WP.org that uses a custom post type with the slug "reading-list" and I cannot view mysite.com/reading-list/ when I have either the "default" or "numeric" permalinks setting in wp-admin.

Does anyone know why this would be, i.e. why it only affects these two settings?

I use flush_rewrite_rules() after registering the custom post type in the plugin and I checked all of the parameters according to the Codex but nothing seems to help.

Thanks.

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The URL you are trying to access-- mysite.com/reading-list/-- is constructed by the WordPress rewrite rules. The path /reading-list/ doesn't actually exist. If you are using the default ?p=123 links, those rewrite rules are not used. The default links are just GET strings.

In other words, since there is nothing at mysite.com/reading-list/ without the rewrite rules you get a 404.

Without the rewrite rules, you need to access the content using vanilla GET syntax. For example, the "Book" post type used in the Codex as an example...

function codex_custom_init() {
    $args = array(
      'public' => true,
      'label'  => 'Books'
    );
    register_post_type( 'book', $args );
}
add_action( 'init', 'codex_custom_init' );

... is accessed without rewriting as ?book=book-cpt-post-title. You can't switch off rewriting and also have that non-existent /reading-list/ directory, though you could create a "Page" called reading-list and use that to display your CPT.

  • That is what I was thinking. So is there any way to fix this or work around it? – Mike Stumpf Sep 27 '13 at 12:40
  • @MikeStumpf : see the edit – s_ha_dum Sep 27 '13 at 14:36

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