使用WP Types Plugin, 我设置了一个自定义post类型（slug：portfolio), 具有自定义分类法（slug：portfolio-category).

自定义分类法有三项（slug：group1, group2, group3) 组织公文包帖子。

在每个公文包页面上，我显示了来自同一分类术语的3篇相关帖子，按slug过滤：

global $post;

$term_list = wp_get_post_terms($post->ID, \'portfolio-category\', array("fields" => "names"));

      $wpex_port_query = new WP_Query(
          array(
              \'post_type\' => \'portfolio\',
              \'showposts\' => \'3\',
              \'orderby\' => \'rand\',
              \'post__not_in\' => array($post->ID),
              \'no_found_rows\' => true,
              \'tax_query\' => array(
                  array(
                     \'taxonomy\' => \'portfolio-category\',
                     \'field\'    => \'slug\',
                     \'terms\'    => $term_list,
                    )
                )
            )
        );