ACF - Dynamically populate selected entries in Relationship field

gistfile1.php

add_filter('acf/load_value/name=name-of-relationship-field', function($value) {

    if(empty($value)) {
        $value = get_posts(array(
            'post_type'      => 'name-of-post-type',
            'posts_per_page' => -1,
            'orderby'        => 'menu_order',
            'order'          => 'ASC',
            'fields'         => 'ids',
        ));
    }

    return $value;

});