post_parent query var should accept an array

[nacin]

if ( is_numeric($q['post_parent']) )
	$where .= $wpdb->prepare( " AND $wpdb->posts.post_parent = %d ", $q['post_parent'] );

It'd be nice to be able to either pass an array, or introduce post_parent__in and __not_in vars.

Just use 'post_parent'

Hm... didn't think about 'post_parent__not_in'.

Similar: #16854

Running into this as an issue with the bbPress plugin and the topics and replies widgets. Since forums can be 'private' I specifically need...

post_parent__not_in

...to exclude private forum IDs from the widgets completely. The alternative is quite ugly, involving using meta queries and storing an additional meta entry for every topic/reply with the forum status. Ugly because if the forum status changes, every topic/reply in that forum needs to be updated.

Any way to scoot this into 3.2-early?

Have a ticket number over on bbPress Trac? I'll contribute some code I wrote that will implement this via a plugin.

​http://trac.bbpress.org/ticket/1470

Yeah, keep in mind that you can easily implement custom query vars using filters: 'posts_where', 'posts_clauses' etc.

Attached file will implement post_parent__in and not__in. It'll noop automatically once it's implemented in core, if added to WP::$private_query_vars. Originally this had some other code:

The other code I wrote avoided private_query_vars for the check and did this:

	$qv_test = $wp_query->fill_query_vars( array() );
	if ( isset( $qv_test['post_parent__in'] ) )
		return $where;

Duplicate of #11056.