Reply To: Post Object field with multiple posts into a WP_Query or while loop?

• Keith Lock

• September 23, 2017 at 2:37 am

Hello…

With WP_Query you can use the argument post__in to pass in an array of post IDs…
See here: https://codex.wordpress.org/Class_Reference/WP_Query#Post_.26_Page_Parameters

So… with a Post Object ACF filed, you might be returning IDs or Post Objects (default).

If returning Post Objects, you can use this code to get an array of IDs:

$post_objects = get_field('po');
$post_object_ids = array_map(function($o) { return $o->ID; }, $post_objects); // array of IDs to pass to: post__in in a WP_Query

Careful though about passing an empty array to post__in because it will return all results.