Question

I created a hierarchical custom post type called “films.” It is hierarchical so it can have children elements.

I am using a conditional statement in my single-films.php to show different content for the parent page from the children pages like so:

<?php while(have_posts()) : the_post(); ?>

<?php if( $post->post_parent != 0 ) {
    echo "Child Page";
} else {
    echo "Film Page";
} ?>
<?php endwhile; ?>

In the condition that the page is a child, I want to use the values entered on the parents page, not the child page. Because the loop has already been created, I need to figure out a way to pull content from the parent page JUST on the children pages. I need it to pull any content I wish (custom field, title, featured image, etc) from it’s parent. Any idea how I can modify this loop to pull content from it’s parent?

Answer 1

WordPress has a nice get_post function, you can use it like this to get the parent’s title for example:

<?php 

if ($post->post_parent != 0) {
  $parent = get_post($post->post_parent); 
  echo $parent->post_title;
} ?>

You can access any custom field by its key/name and the parent’s post id:

<?php

$image = wp_get_attachment_image_src(get_post_meta($post->post_parent, 'custom-field-key', true));
echo '<img src="' . $image[0] . '" />';
?>

This works for sure with the Advanced Custom Fields Plugin for WordPress.