PostType.php

class PostType {

	public $post_type;
	private $name;
	private $plural;
	private $altArgs;

    function PostType( $post_type, $single_name, $plural_name = '', $altArgs = array() ) {
    	if(isset($post_type) && isset($single_name)){
    		$this->post_type = $post_type;
    		$this->name = $single_name;
    		$this->plural = empty($plural_name)?$single_name.'s':$plural_name;
    		$this->altArgs = $altArgs;
        	add_filter( 'init' , array( &$this , 'register_post_type_helper' ) );
    	}
    }

    function register_post_type_helper() {
    		$labels = array(
			'name'               => $this->name,
			'singular_name'      => $this->name,
			'menu_name'          => $this->plural,
			'name_admin_bar'     => $this->name,
			'add_new'            => 'Add New',
			'add_new_item'       => 'Add New ' . $this->name,
			'new_item'           => 'New ' . $this->name,
			'edit_item'          => 'Edit ' . $this->name,
			'view_item'          => 'View ' . $this->name,
			'all_items'          => 'All ' . $this->plural,
			'search_items'       => 'Search ' . $this->plural ,
			'parent_item_colon'  => 'Parent ' . $this->plural,
			'not_found'          => 'No ' . $this->plural . ' found',
			'not_found_in_trash' => 'No ' . $this->plural . ' found in Trash',
		);

		$args = array(
			'public'             => true,
			'publicly_queryable' => true,
			'show_ui'            => true,
			'show_in_menu'       => true,
			'query_var'          => true,
			'rewrite'            => array( 'slug' => preg_replace("/[^A-Za-z]/", '-', $this->name) ),
			'capability_type'    => 'post',
			'has_archive'        => true,
			'hierarchical'       => false,
			'menu_position'      => null,
			'supports'           => array( 'title', 'editor', 'author', 'thumbnail', 'excerpt', 'comments' )
		);		

		$args = array_merge($args, $this->altArgs);
		$args['labels'] = $labels;

		register_post_type( $this->post_type, $args );
    }

    public function getQuery( $arguments = array() ){
    	$args = array_merge(array( 'post_type' => $this->post_type ), $arguments);
    	// The Query
		$query = new WP_Query( $args );
    	return $query;
    }

    public function archiveLink($text = null){
    	if($text == null){
    		return get_post_type_archive_link( $this->post_type );
    	}


    	return "".$text."";
    	
    }

    public function doQuery($fn, $numargs = array()){
    	if($fn === null){
    		return false;
    	}

    	$query = $this->getQuery($numargs);
		if ( $query->have_posts() ) {
			while ( $query->have_posts() ) {
				$query->the_post();
				$fn($post);
			}
			wp_reset_postdata();
			return 'true';
		} else {
			$fn(null);
			wp_reset_postdata();
			return 'false';
		}
    }
}