Reply To: Add condition: page parent for custom post types

• mooner

• October 11, 2016 at 6:22 am

This was a super helpful piece of code. I made one small addition which is to allow for an option for “No Parent” i.e. when the current custom post has no parent set. This was literally one line but I also made some tiny cleanups to the code so I’ve included it below.

Thanks again!

function acf_location_rules_types($choices) {
    $choices['Custom Post Types']['cpt_parent'] = 'Custom Post Type Parent';
    return $choices;
}
add_filter('acf/location/rule_types', 'acf_location_rules_types');

function acf_location_rules_values_cpt_parent($choices) {
	$args = array(
		'hierarchical' => true,
		'_builtin' => false,
		'public' => true
	);
	$hierarchical_posttypes = get_post_types($args);
	foreach($hierarchical_posttypes as $hierarchical_posttype) {
		if ('acf' !== $hierarchical_posttype) {
			$choices[0] = __('No Parent');
			$args = array(
				'post_type' => $hierarchical_posttype,
				'posts_per_page' => -1,
				'post_status' => 'publish'
			);
			$customposts = get_posts($args);
			foreach ($customposts as $custompost) {
				$choices[$custompost->ID] = $custompost->post_title;
			}
		}
	}
	return $choices;
}
add_filter('acf/location/rule_values/cpt_parent', 'acf_location_rules_values_cpt_parent');

function acf_location_rules_match_cpt_parent($match, $rule, $options) {
	global $post;
	$selected_post = (int) $rule['value'];
	if ($post) { // post parent
		$post_parent = $post->post_parent;
		if ($options['page_parent']) {
			$post_parent = $options['page_parent'];
		}
		if ('==' == $rule['operator']) {
			$match = ($post_parent == $selected_post);
		} elseif ('!=' == $rule['operator']) {
			$match = ($post_parent != $selected_post);
		}
	}
  return $match;
}
add_filter('acf/location/rule_match/cpt_parent', 'acf_location_rules_match_cpt_parent', 10, 3);