Basic setup for FAQ custom post type in WordPress

faq-post-type.php

<?php
/**
 * Post type to manage a list of frequently asked questions.
 *
 * @package rho
 */
if (__FILE__ == $_SERVER['SCRIPT_FILENAME']) { die(); }


if ( ! class_exists( 'FAQ_Post_Type' ) ) :

class FAQ_Post_Type {

	function __construct() {

		// Runs when the plugin is activated
		register_activation_hook( __FILE__, array( &$this, 'plugin_activation' ) );

		// Adds post type and taxonomies
		add_action( 'init', array( &$this, 'faq_init' ) );

		// Show post counts in the dashboard
		add_action( 'dashboard_glance_items', array( &$this, 'add_faq_counts' ) );

		// Give the menu item a unique icon
		add_action( 'admin_head', array( &$this, 'faq_icon' ) );
	}

	/**
	 * Flushes rewrite rules on plugin activation to ensure posts don't 404
	 * http://codex.wordpress.org/Function_Reference/flush_rewrite_rules
	 */
	function plugin_activation() {
		$this->faq_init();
		flush_rewrite_rules();
	}

	function faq_init() {
		/**
		 * Enable the custom post type
		 * http://codex.wordpress.org/Function_Reference/register_post_type
		 */
		$labels = array(
			'name' => __( 'FAQs', 'rho' ),
			'singular_name' => __( 'FAQ', 'rho' ),
			'add_new' => __( 'Add New FAQ', 'rho' ),
			'add_new_item' => __( 'Add New FAQ', 'rho' ),
			'edit_item' => __( 'Edit FAQ', 'rho' ),
			'new_item' => __( 'Add New FAQ', 'rho' ),
			'view_item' => __( 'View FAQ', 'rho' ),
			'search_items' => __( 'Search FAQs', 'rho' ),
			'not_found' => __( 'No items found', 'rho' ),
			'not_found_in_trash' => __( 'No items found in trash', 'rho' )
		);

		$args = array(
			'labels' => $labels,
			'public' => true,
			'supports' => array( 'title', 'editor', 'revisions' ),
			'capability_type' => 'post',
			'rewrite' => array( 'slug' => 'faq' ),
			'menu_position' => 5,
			'has_archive' => true
		);

		register_post_type( 'faq', $args );

	}

	/**
	 * Add count to "At a Glance" Dashboard Widget
	 */
	function add_faq_counts() {
		if ( ! post_type_exists( 'faq' ) ) {
			 return;
		}

		$post_types = array( 'faq' ); // array of custom post types to add to 'At A Glance' widget
		foreach ( $post_types as $pt ) :
			$pt_info = get_post_type_object( $pt ); // get a specific CPT's details
			$num_posts = wp_count_posts( $pt ); // retrieve number of posts associated with this CPT
			$num = number_format_i18n( $num_posts->publish ); // number of published posts for this CPT
			$text = _n( $pt_info->labels->singular_name, $pt_info->labels->name, intval( $num_posts->publish ) ); // singular/plural text label for CPT
			echo '<li class="page-count ' . $pt_info->name . '-count"><a href="edit.php?post_type=' . $pt . '">' . $num . ' ' . $text. '</a></li>';
		endforeach;

	}

	/**
	 * Displays the custom post type icon in the admin
	 */
	function faq_icon() { ?>
		<style type="text/css" media="screen">
			#adminmenu #menu-posts-faq div.wp-menu-image:before,
			#dashboard_right_now .page-count.faq-count a:before {
				content: "\f223";
			}
		</style>
	<?php }

}

new FAQ_Post_Type;

endif;