Use wp_list_categories to list parent categories from actual term

Question

I currently have a taxonomy called wpsc_product_category. Under that taxonomy I have several terms used as sub-categories, and finally each sub-category has a number of products. I'm trying to use wp_list_categories to show an ul starting from the parent category of the current product your are viewing. ¿Is this possible?

<?php    

$taxonomy     = 'wpsc_product_category';
$orderby      = 'name'; 
$show_count   = 0;      // 1 for yes, 0 for no
$pad_counts   = 0;      // 1 for yes, 0 for no
$hierarchical = 1;      // 1 for yes, 0 for no
$title        = '';
$child_of     = $actualcategoryparentid

$args = array(
  'taxonomy'     => $taxonomy,
  'orderby'      => $orderby,
  'show_count'   => $show_count,
  'pad_counts'   => $pad_counts,
  'hierarchical' => $hierarchical,
  'title_li'     => $title
  'child_of'     => $child_of
);
?>

<ul>
<?php wp_list_categories( $args ); ?>
</ul>

I thought of something like this, but I don't know how to retrieve $actualcategoryparentid.

Any ideas?

Thanks!

Answer 1

this will work:

$terms = wp_get_object_terms( $post->ID, 'wpsc_product_category' );
foreach($terms as $term){
    if($term->parent != 0){
        // this category has a parent and its id is $term->parent
    }
}