custom post type tags

Question

I have this code:

$args=array(
        'post_type' => array ('portfolio'),
        'orderby' => $orderby,
        'order' => 'DESC',
        'paged' => $paged,
        'posts_per_page' => $post_per_page,
        'ignore_sticky_posts' => $do_not_show_stickies
      );
        if($pf_categorynotin){
            $args['tax_query'] = array(
                array(
                    'taxonomy' => 'portfolio_category',
                    'field' => 'slug',
                    'terms' => $pf_categorynotin,
                    'operator' => 'NOT IN'
                )
            ); //category__in
        }

What I'm asking is how to add also "portfolio_tag" taxonomy because I want to list tags from my custom post type. Any suggestions on how to achieve this ? Thanks!

Later edit: here is snippet of the code that is used to retrieve portfolio categories and how they are displayed: snippet

Answer 1

I use this function to display comma separated terms from a custom taxonomy:

// Get Comma Seperated List of Custom Taxonomy //
function the_custom_taxonomies($taxonomy) {
    global $post;
    $terms = get_the_terms($post->ID, $taxonomy);
    $counter = 0;
    if (!empty($terms)) {
        foreach ($terms as $term) {
            echo $term->name;
            if (++$counter < count($terms))
                echo ", ";
        }
    }
}