Check if Current Category has Children

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I need to tell whether or not the current custom taxonomy archive page I’m viewing has child categories. I’ve got a situation where there are a lot of custom categories with children and the site is only to show posts at the end of the line. Otherwise it should show a link to the category that’s the next step down. I’ve found this snippet, but it doesn’t seem to work for custom taxonomies.

function category_has_children() {
global $wpdb;   
$term = get_queried_object();
$category_children_check = $wpdb->get_results(" SELECT * FROM wp_term_taxonomy WHERE parent="$term->term_id" ");
    if ($category_children_check) {
        return true;
    } else {
       return false;
    }
}   

<?php
    if (!category_has_children()) {
        //use whatever loop or template part here to show the posts at the end of the line
   get_template_part('loop', 'index'); 
       }   

    else {
       // show your category index page here
    }
?>

4

There may or may not be a better way to do this, but here’s how I would do it:

$term = get_queried_object();

$children = get_terms( $term->taxonomy, array(
'parent'    => $term->term_id,
'hide_empty' => false
) );
// print_r($children); // uncomment to examine for debugging
if($children) { // get_terms will return false if tax does not exist or term wasn't found.
    // term has children
}

If current taxonomy term has children the get_terms function will return an array, otherwise it will return false.

Tested and works on my local vanilla install with Custom Post Type UI plugin used for CPT generation.

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