How to display content from a child page within a hierarchial custom post type? - custom-post-type

Question

I have a hierarchical custom post type. It has 6 pages, and each page has 3 child pages.
When viewing one of the 6 pages, I need to display content (a title and excerpt) from each of its 3 child/descendent pages.
Here is my current loop:
<?php if(have_posts()):?>
<?php query_posts('&post_type=how-we-do-it&post_parent=0');?>
<?php while(have_posts()):the_post();?>
<?php $color = get_post_meta( get_the_ID(), 'pointb_how-we-do-it-color', true ); ?>
<div class="section">
<div class="title">
<h1 style="background:<?php echo $color;?> !important;">
<?php the_title();?>
</h1>
</div>
<div class="content">
<div class="how-<?php the_slug();?>">the summary here. and here is child content:
<div class="child">child content should be here.</div>
</div>
</div>
</div>
<?php endwhile;?>
<?php wp_reset_query(); ?>
<?php endif;?>
I have tried numerous different approaches to try and accomplish what I need, but none of them work within the custom post type. Here are some of the various methods I have tried:
I tried the suggested code on this page: http://wordpress.org/support/topic/display-child-pages-title-amp-content-on-parent-page
I also tried the following code:
$pageChildren = get_pages('child_of='.$post->ID');
if ( $pageChildren ) {
foreach ( $pageChildren as $pageChild ) {
echo '<h2>'. $pageChild->post_title.'</h2>
';
if ($pageChild->post_excerpt){
echo ''.$pageChild->post_excerpt.'
';
}
}
}
I've tried a number of other methods that I didn't bother saving, so I can't show them.
I'm at the point where I am getting frustrated with this and thought I'd throw it out here to get some fresh perspectives.

Answer 1

The issue with your first sample is that you call if(have_posts()) before you reconstruct the query.
The second sample has a dangling ' after $post->ID.
Try this:
$pageChildren = get_posts( 'post_type=how-we-do-it&post_parent='.$post->ID );

Answer 2

Based on some comments from MarZab above, I got thinking about the post ID.
I made the following tweak to the block of code I originally posted above, and now it works perfectly:
$pageChildren = get_pages('child_of='.$post->ID');
Is now:
$post_id = get_the_ID();
$pageChildren = get_posts( 'post_type=how-we-do-it&echo=0&post_parent='.$post_id );