Hello,

I am posting this here to help a buddy from Twitter figure out a solution to a problem he ran into.

So, the problem was needing to create user-editable additional content for a post like seen in the picture. http://twitpic.com/27fpu0

The way I accomplished this was to create a custome post type ( I reused one from a test theme I was working on called "achievement"

in the functions file...

add_action('init', 'wlg_cstm_register');  
   
 function wlg_cstm_register() {  
     	
	$achievement_labels = array(
    'name' => _x('Achievements', 'post type general name'),
    'singular_name' => _x('Achievement', 'post type singular name'),
    'add_new' => _x('Add New', 'achievement'),
    'add_new_item' => __('Add New Achievements'),
    'edit_item' => __('Edit Achievements'),
    'new_item' => __('New Achievement'),
    'view_item' => __('View Achievements'),
    'search_items' => __('Search Achievements'),
    'not_found' =>  __('No achievements found'),
    'not_found_in_trash' => __('No achievements found in Trash'), 
    'parent_item_colon' => ''
);

	$achievement_args = array(  
         'labels' => $achievement_labels,  
         'public' => true,  
         'show_ui' => true,  
         'capability_type' => 'post',  
         'hierarchical' => false,  
         'rewrite' => true,
         'supports' => array('title', 'editor', 'thumbnail')  
        );


     register_post_type( 'achievement' , $achievement_args ); 
 }

This code create a new post type called "achievement"

I also added a custom meta box (this is basically like hard coding a custom field.)

	add_action("admin_init", "admin_init");
	add_action('save_post', 'save_points');

	function admin_init(){
		add_meta_box("achievementInfo-meta", "Achievement Points", "achievement_meta_options", "achievement", "side", "low");

	}

	function achievement_meta_options(){
		global $post;
		$custom = get_post_custom($post->ID);
		$points = $custom["points"][0];
?>
	<label>Points:</label><textarea rows="10" cols="60" name="points"><?php echo $points; ?></textarea>
<?php
	}


function save_points(){
	global $post;
	update_post_meta($post->ID, "points", $_POST["points"]);
}

It creates a textarea called "points" and adds this meta box only to the "achievement" post type. It then saves the value to a points meta option upon update.

I then created a new file in my theme called single-achievement.php (this determines how the single achievement post will look.)

<?php the_post(); ?>

<?php
	$custom = get_post_custom($post->ID);
	$display_points = $custom["points"][0];
?>

<div id="post-<?php the_ID(); ?>" <?php post_class(); ?>>
<h1 class="entry-title"><?php the_title(); ?></h1>



<div class="entry-meta">

	<div class="entry-content">
		<?php
if ( has_post_thumbnail() ) {
	 the_post_thumbnail();
}
?>
		<?php the_content(); ?>
		
		<div class="editable">
<?php echo $display_points; ?>
</div>
	</div>
</div>

Basically it just gets the content, the "points" value, and title.

To show the posts in the main loop, I just did a query_posts and got both the "post" post type, and the custom "achievement" post type....

<?php query_posts( array( 'post_type' => array('post', 'achievement') ) );
 ?>
	<?php if (have_posts()) : while (have_posts()) : the_post(); ?>

		<div <?php post_class() ?> id="post-<?php the_ID(); ?>">

			<h2><a href="<?php the_permalink() ?>"><?php the_title(); ?></a></h2>

			<?php include (TEMPLATEPATH . '/inc/meta.php' ); ?>

			<div class="entry">

				<?php the_content(); ?>
			</div>

			<div class="postmetadata">
				<?php the_tags('Tags: ', ', ', '<br />'); ?>
				Posted in <?php the_category(', ') ?> | 
				<?php comments_popup_link('No Comments &#187;', '1 Comment &#187;', '% Comments &#187;'); ?>
			</div>

		</div>

	<?php endwhile; ?>

You can see it in action here, there is no styling on the theme...
http://tests.dingledoodle.com/diet/

I made the custom meta HTML lists to make sure HTML input works there.

To add a second, just make a second meta box like above, and display that second meta info in the single-achievement.php template.