Reply To: How can I filter a posts relationship field by the current category edit screen?

• tanyamk

• November 10, 2016 at 12:03 am

Needed this today, and found the solution.

Here it is in case someone needs it:

function limit_cat_post_relationships( $title, $post3, $field, $post_id  )
{
    /* Because this is proccesd as an AJAX request
     * we can get the referer, and extract the tag_ID from there
     */
    
    $url     = wp_get_referer();
    $parts   = parse_url($url);
    parse_str($parts['query'], $query);

    $title['tax_query'][0]['terms'][0] = $query['tag_ID']; 
    return $title;
}
add_filter('acf/fields/relationship/query/name=ibm_topic_feat_posts', 'limit_cat_post_relationships', 10, 3);