__( 'Series of posts' ), 'sort' => true, 'args' => array( 'orderby' => 'term_order' ), 'rewrite' => array( 'slug' => 'series_of_posts' ) ) ); } add_action( 'init', 'ml_post_series_init' ); /* Output code */ function ml_post_series_output() { if ( is_single() && has_term('', 'series_of_posts')) { $terms = get_the_terms($post->ID, 'series_of_posts'); $count = count($terms); if ( $count > 0 ) { echo "

" . $term->name . ":

'; ?> '; endwhile; // Reset Post Data wp_reset_postdata(); } echo "

"; } } else { }; }; /* Replaces the shortcode with list of posts */ function ml_post_series_has_shortcode() { return ml_post_series_output(); } add_shortcode('post_series', 'ml_post_series_has_shortcode'); /* Shows list of post when no shortcode is provided */ function ml_series_of_posts_noshortcode() { global $post; if ( is_single() && has_term('', 'series_of_posts') && ! has_shortcode( $post->post_content , 'post_series' ) ) { return ml_post_series_output(); } else { }; }; add_action( 'get_template_part_content', 'ml_series_of_posts_noshortcode' ); ?>