Custom post type capability type 'page' not working

Question

I'm trying to create a custom post type that's supposed to be used for a publication issue -> article structure. Since the hierarchical structure is really only meant for pages (refer to hierarchical section's note), I figured I'd configure the custom post type to act as a page.

Great, except I can't get it to work properly. Even after setting capability_type to page and hierarchical to true, the edit screen for the post type is still acting as though it's a post. There aren't any "parent" or "page template" attribute drop down menus.

If I change the capability_type from page to post, literally nothing changes with the edit screen.

Here's my code:

register_post_type('publication', array(
    'label' => 'Publication',
    'public' => true,
    'show_ui' => true,
    'show_in_menu' => true,
    'capability_type' => 'page',
    'map_meta_cap' => true,
    'hierarchical' => true,
    'rewrite' => array('slug' => 'publication', 'with_front' => true),
    'query_var' => true,
    'supports' => array('title','editor','comments','revisions','author','page-attributes'),
    'labels' => array (
        'name' => 'Publications',
        'singular_name' => 'Publication',
        'menu_name' => 'Publications',
    )
));

Any ideas what's wrong here?

Answer 1

I've taken this from another site I have made which uses the hierarchical structure and it works. (I have amended to fit your post type)

function register_publications_cpt() {

        $labels = array(
            'name' => _x('Publications', 'post type general name'),
            'singular_name' => _x('Publication', 'post type singular name'),
            'add_new' => _x('Add New', ''),
            'add_new_item' => __('Add New Publication'),
            'edit_item' => __('Edit Publication'),
            'new_item' => __('New Publication'),
            'all_items' => __('All Publication'),
            'view_item' => __('View Publication'),
            'search_items' => __('Search Publications'),
            'not_found' =>  __('No Publications found'),
            'not_found_in_trash' => __('No Publications found in Trash'), 
            'parent_item_colon' => '',
            'menu_name' => 'Publications'
        );

        $args = array(
            'hierarchical' => true,     
            'labels' => $labels,
            'public' => true,
            'publicly_queryable' => true,
            'show_ui' => true, 
            'show_in_menu' => true, 
            'query_var' => true,
            'rewrite' => true,
            'capability_type' => 'page',
            'has_archive' => false, 
            'menu_position' => 22,
            'supports' => array( 'title', 'editor', 'author', 'thumbnail', 'revisions', 'page-attributes', 'custom-fields' )
        ); 

        register_post_type('publication', $args);

}
add_action('init', 'register_publications_cpt');

Answer 2

Old question but I was looking for the answer myself...

You need two things here when creating your post type to fix this:

'hierarchical' => true,
'supports' => array('page-attributes'),

That will give you a template select and an order menu.