Wordpress: Add custom taxonomy terms to body class

gistfile1.php

<?php
            // Add custom taxonomy terms to body class
            function section_taxonomy_in_body_class( $classes ){
              if( is_singular() )
              {
                global $post;
                $custom_terms = get_the_terms($post->ID, 'subsite');
                if ($custom_terms) {
                  foreach ($custom_terms as $custom_term) {
                    $classes[] = 'section_' . $custom_term->slug;
                  }
                }
              }
              return $classes;
            }
            add_filter( 'body_class', 'section_taxonomy_in_body_class' );