Custom post type support for get_users('orderby=post_count');

Question

The default WordPress function get_users('orderby=post_count'); only orders users with the count of the posts they've made.

Any idea how to modify this to support custom post types as well?

UPDATE:

I only want to query posts of type "company-item". Currently, this snippet is in my functions.php:

 function user_query_count_post_type($args) {
   $args->query_from = str_replace("post_type = post AND", "post_type IN ('company-item') AND ", $args->query_from);
  }

And this is in my page template:

<ul>
  <?php
  add_action('pre_user_query','user_query_count_post_type');
  $showrooms = get_users('orderby=post_count&role=company&order=desc');
  remove_action('pre_user_query','user_query_count_post_type');

  foreach ($showrooms as $showroom) : ?>
    <li>
        <a href="<?php echo get_author_posts_url( $showroom->id ); ?>" ><img src="<?php echo $showroom->company_logo; ?>" title="<?php echo $showroom->company_name; ?>" /></a>
    </li>

  <?php endforeach; ?>
</ul>

Answer 1

you can try to replace the where clause of the query by hooking to pre_user_query. Something like:

function user_query_count_post_type($args){
    $args->query_from = str_replace("post_type = post AND", "post_type IN ('post','cpt') AND ", $args->query_from);
}

Usage ex:

add_action('pre_user_query','user_query_count_post_type');
$users = get_users('orderby=post_count');
remove_action('pre_user_query','user_query_count_post_type');

Answer 2

A bit late but, just in case someone needs it on the future. You could add a get_posts inside the normal foreach for users, to check if a given user has stuff published on posts, OR on the CPT you want:

if ( ! function_exists( 'contributors_author_list' ) ) :

function contributors_author_list() {

    $contributor_ids = get_users( array(
        'fields'  => 'ID',
        'orderby' => 'post_count',
        'order'   => 'DESC',
        'who'     => 'authors',
        'number' => '100'
    ) );

    foreach ( $contributor_ids as $contributor_id ) :

        $argos = array( 'author' => $contributor_id, 'post_type'=> array('post','CHANGE-HERE-YOUR-CPT') ); //change here the CPT
        $userposts = get_posts($argos);
        $count=count($userposts);
        if ($count) {
    ?>

<!-- HTML stuff -->    

    <?php    
        }
    endforeach;
}
endif;

This way you should be able to display authors who published either posts or Custom Post Types (or both).