Profile: gabrielB

Problem:
Client has a many-to-many relationship and is using the toolset_get_related_posts API function to get related posts. It works in one direction (get A posts related to a B post) but not the other (get B posts related to an A post).

Solution:
The arguments were wrongly supplied to toolset_get_related_posts.

In a one-to-many relationship the one is the 'parent' and the many are the 'children'.

In a many-to-many relationship that same convention doesn't really make sense, but is used anyway.

So the post type on the left is the 'parent' and the post type on the right is the 'child', even though they are more like siblings.

You need to specify the 'parent' and 'child' correctly in the function arguments.

Here is a generic example to retrieve related posts, using the parent-child convention even for a M2M relationship:

$children = toolset_get_related_posts(
	$parent_id,
	$relationship_slug,
	array(
		'query_by_role' => 'parent',
		'limit'			=> 999,
		'return'		=> 'post_id',
		'role_to_return'	=> 'child'
	)
);

Relevant Documentation:
https://toolset.com/documentation/customizing-sites-using-php/post-relationships-api/#toolset_get_related_posts