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
}
?>
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.