dennisbrewer

Resolved

Ah thanks esmi.

I pop it at the bottom of functions.php and nothing seems to change until I take the if statement out though. Then it works fine but obviously is on all the pages…

As it’s a image post from a wordpress gallery does that mean I need to call it something else than if( $is_attachment )?

Just to be clear the following does what I required but justs adds the parentis on all the pages not just the image gallery pages.

function my_attachment_body_class($classes) {
	global $post;

	$classes[] = 'parentis-' . $post->post_parent;

	return $classes;
}
add_filter('body_class', 'my_attachment_body_class');