[Plugin: Posts 2 Posts] p2p metabox disappears in 0.7

Please paste the code you’re using to register the connection.

p2p_register_connection_type( array(
	'from' => array('stills','videos'),
	'to' => 'releases',
) );

Ah yes, p2p_register_connection_type() doesn’t accept arrays of post types anymore. This is fixed in the development version (0.8-alpha).

For controling where the connection box appears, you can use the ‘context’ arg (the default is ‘side’):

p2p_register_connection_type( array(
	'from' => array('stills','videos'),
	'to' => 'releases',
	'context' => 'advanced'
) );

Thanks – the 0.8a fixed it.

Context worked too, but wondering how I can change the order of metaboxes displaying – I know “normal” comes before “advanced”, but I’d prefer the connection box display in a specific order, among the other metaboxes I’m creating for my custom post type. That’s why I wondered if I could programmatically spawn it myself. Even better would be for me to be able to display the connection box UI components within another custom metabox I’ve created to display additional information about the connected posts.

Many versions ago, I was actually able to do this by calling a p2p class directly:

$args = array(
	'from' => 'stills',
	'to' => 'releases',
	'box' => 'P2P_Box_2',
	'title' => 'Foobar',
	'reciprocal' => false,
);
$foo = new P2P_Box_Multiple($args, false, 0);

This doesn’t work anymore – is there a new way I can “inject” the connection box UI elsewhere?

I’m afraid you’re on your own there.

If you need that much control, you’re probably better off writing your own UI from scratch and using the available API to create the connections.

I have a custom post type that I’m registering with p2p, but I don’t actually want to display the connection box on the edit page for that type – I only want to create p2p connections programmatically (not allow user to do so manually).

I took a wild guess and put

p2p_register_connection_type( array(
	'from' => 'foo',
	'to' => 'bar',
	'context' => 'none'
) );

in my p2p_register_connection_type.

It seems to work – the metabox isn’t showing, but am I breaking something by doing this?

At the moment, p2p_register_connection_type() is just for creating metaboxes, so you can skip it entirely.

but if I skip it, can I still use p2p_connect() to establish the relationship?

Somehow I thought I had to declare the relationship between types first with p2p_register_connection_type() and then p2p_connect() to create each individual connection…

Yes, you can still use p2p_connect() etc.

As I said before, p2p_register_connection_type() is just for the UI.

If you don’t trust me on that, just look at the code. ??