Related posts

Continuing from the Basic usage tutorial, let's say that when viewing a single post, you don't want to show the connected page, but other posts connected to the same page.

First, you will have to create a function in your functions.php theme file:

<?php
function get_related_posts( $post_id ) {
	global $my_connection_type;

	// Get the page connected to the post
	$related_pages = $my_connection_type->get_connected( $post_id );

	// No related posts if there's no page connecting them
	if ( !$related_pages->have_posts() )
		return array();

	// Get the page ids
	$page_ids = wp_list_pluck( $related_pages->posts, 'ID' );

	// Get the other posts connected to the same pages, except the current post
	return $my_connection_type->get_connected( $page_ids, array(
		'post__not_in' => array( $post_id ),
	) );
}

It takes a post id and returns a WP_Query instance with the related posts.

Now that we have the logic for finding related posts, all we need to do is display them:

<?php p2p_list_posts( get_related_posts( get_queried_object_id() ) ); ?>

The above code would go in single.php