WordPress Plugin Quote Author

quote-author.php

<?php # -*- coding: utf-8 -*-
/*
Plugin Name: Custom Taxonomy Quote Author
Plugin URI:  https://gist.github.com/996608
Description: Creates a custom taxonomy <code>Quote Author</code> with an URI <code>/qa/author-name/</code>
Version:     1.0
Required:    3.1
Author:      Thomas Scholz
Author URI:  http://toscho.de
License:     GPL
*/
! defined( 'ABSPATH' ) and exit;

add_action( 'after_setup_theme', 'register_quote_author' );

register_activation_hook(   __FILE__, 'qua_flush' );
register_deactivation_hook( __FILE__, 'qua_flush' );

/**
 * Registers the taxonomy 'Quote Author'.
 *
 * To list the authors with links in your theme use
 * @link http://codex.wordpress.org/Function_Reference/get_the_term_list
 * <code>print get_the_term_list( get_the_ID(), 'quoteauthor' );</code>
 *
 * @link http://codex.wordpress.org/Function_Reference/register_taxonomy
 * @return void
 */
function register_quote_author()
{
	register_taxonomy(
		// Internal name
		'quoteauthor'
		// Post types the taxonomy applies to.
		// The attachment field is not very nice, just a simple input field.
		// You may tweak that.
	,	array ( 'post', 'attachment' )
		// Visible labels
	,	array (
		'labels'            => array (
			'name'                       => 'Quote Authors'
		,	'menu_name'                  => 'Quote Authors'
		,	'singular_name'              => 'Quote Author'
		,	'search_items'               => 'Search Quote Authors'
		,	'popular_items'              => 'Popular Quote Authors'
		,	'all_items'                  => 'All Quote Authors'
		,	'edit_item'                  => 'Edit Quote Author'
		,	'update_item'                => 'Update Quote Author'
		,	'add_new_item'               => 'Add Quote Author'
		,	'new_item_name'              => 'New name for Quote Author'
		,	'separate_items_with_commas' => 'Separate Quote Authors by comma'
		,	'add_or_remove_items'        => 'Add or remove Quote Authors'
		,	'choose_from_most_used'      => 'Choose from most quoted authors'
		)
		// Most important parameter. :)
	,	'public'            => TRUE
		// Available in custom menus.
	,	'show_in_nav_menus' => TRUE
		// Standard box.
	,	'show_ui'           => TRUE
		// Clickable list of popular authors.
	,	'show_tagcloud'     => TRUE
		// URI
	,	'rewrite'           => array (
			'slug' => 'qa'
		)
		// If you want to use WP_Query.
	,	'query_var'         => 'qa'
	)
	);
}
/**
 * Tells WordPress to rebuild the rewrite rules to include our custom URIS.
 *
 * @return void
 */
function qua_flush()
{
	// The current instance of the class WP_Rewrite.
	global $wp_rewrite;
	$wp_rewrite->flush_rules();
}