[Plugin: Posts 2 Posts] Update to 1.1.4 causes "Can't determine direction" error

This error occurs only at one place in the theme : a location where the p2p $connected query actually *cannot* return anything. In the previous version there was simply no output, in 1.1.4 I see the error message.

Yes, that was intentional.

Ok, then I guess the issue is resolved ??

So is there a solution to this?
I am getting the same error and only in one place as well.
The plugin works great in a bunch of my template files except for one of them.
Any solutions?

@snails07 : in my exemple above, you would need to modify the single.php template file, since the way we call the p2p query will be different, depending on the post type.

You would need to change content of the main loop in single.php, to something like this:

if ( 'fruit' == get_post_type() ) {
	include( TEMPLATEPATH . '/inc/single-fruit.php' );
}
elseif ( 'vegetable' == get_post_type() ) {
	include( TEMPLATEPATH . '/inc/single-vegetable.php' );
}
else {
	include( TEMPLATEPATH . '/inc/single-article.php' );
}

The code above will call specific includes, single-fruit.php etc, which you have to create and name as you find practical, depending on your post types. Those sub-templates are the place where you will insert the appropriate p2p query.

I hope this helps your troubleshooting.

Hello, just installed, thank you for this plugin,

Im trying to set a connection between (well known example ;)) actor (custom post type) and movie (custom post type). But I need to set this connection on a specific page which is none of this custom types (neither actor or movie).

What should be proper approach for this? Shall I call a Loop for this specific movie?

p2p_type( ‘actor_to_movie’ )->connect( $actor_id, $movie_id, array(
‘date’ => current_time(‘mysql’)
) );
Warning: Can’t determine direction in /wp-content/plugins/posts-to-posts/core/type.php on line 84

Best regards, plugin is very helpful.

@ Bart Ploom:

Indeed, I think you will need to create a custom loop that calls the desired custom types. As per my experience, you need to create this loop with the query_posts method (if you use WP_Query, p2p won’t work properly).

See https://codex.www.ads-software.com/Function_Reference/query_posts

Here is an example, perhaps something like this will work for you:

global $wp_query;
 $args = array_merge( $wp_query->query, array(
 'post_type' => array('actor', 'movie'),
 ) );
query_posts( $args );

Creating connections is a completely different process. Making a loop using query_posts(), WP_Query or get_posts() makes absolutely no difference.

p2p_type( ‘actor_to_movie’ )->connect( $actor_id, $movie_id, array(
‘date’ => current_time(‘mysql’)
) );

Warning: Can’t determine direction in /wp-content/plugins/posts-to-posts/core/type.php on line 84

Are you absolutely sure that $actor_id is actually an ‘actor’ post and $movie_id is a ‘movie’ post?

Making a loop using query_posts(), WP_Query or get_posts() makes absolutely no difference.

Indeed, my mistake. In my early testing, I missed some crucial bits of information:

• the need to specify 'suppress_filters' => false with get_posts, as explained here.
• the need to replace get_queried_object_id() with $post->ID on templates other than single.php (or to use the each_connected() syntax described in Looping-The-Loop)

Thanks a lot Scribu for expanding those help pages on GitHub!