[Plugin: Post Types Order] Previous / Next Navigation – Wrong order with get_adjacent_post()

Versions :
WP 3.3.2
Advanced Post Types Order 2.5.0.3.1

Problem :
The posts I get from the get_adjacent_post() function in single.php don’t respect the order defined with your plugin.

I saw that the code bellow is commented in your plugin :

//add_filter('get_previous_post_where', 'cpto_get_previous_post_where');
//add_filter('get_previous_post_sort', 'cpto_get_previous_post_sort');
//add_filter('get_next_post_where', 'cpto_get_next_post_where');
//add_filter('get_next_post_sort', 'cpto_get_next_post_sort');

And the matching handler functions don’t exist. Why it isn’t done ?

I put this code in my functions.php to correct this but it doesn’t manage the selected post types in your plugin :

function theme_adjacent_previous_post_sort()
{
    return 'ORDER BY p.menu_order DESC LIMIT 1';
}

add_filter('get_previous_post_sort', 'theme_adjacent_previous_post_sort');

function theme_adjacent_previous_post_where()
{
    global $wpdb;
    global $post;

    return $wpdb->prepare('WHERE p.menu_order < %s AND p.post_type = %s AND p.post_status = "publish"', $post->menu_order, $post->post_type);
}

add_filter('get_previous_post_where', 'theme_adjacent_previous_post_where');

function theme_adjacent_next_post_sort()
{
    return 'ORDER BY p.menu_order ASC LIMIT 1';
}
add_filter('get_next_post_sort', 'theme_adjacent_next_post_sort');

function theme_adjacent_next_post_where()
{
    global $wpdb;
    global $post;

    return $wpdb->prepare('WHERE p.menu_order > %s AND p.post_type = %s AND p.post_status = "publish"', $post->menu_order, $post->post_type);
}

add_filter('get_next_post_where', 'theme_adjacent_next_post_where');

http://wordpress.org/extend/plugins/post-types-order/