Just in case it helps anyone…
After a few minutes of thought, I figured that it was just way easier to dynamically populate a checkbox field with post values instead of superfluous wrangling. My code:
function my_acf_field_checkbox( $field ){
global $wpdb;
$querystr = "SELECT * FROM '$wpdb->posts' WHERE 'post_type' = 'my-cpt'";
$my_cpts = $wpdb->get_results($querystr, OBJECT);
if($my_cpts){
$my_cpt_arr = array();
foreach($my_cpts as $my_cpt):
$my_cpt_arr[$my_cpt->ID] = $my_cpt->post_title;
endforeach;
}
$field['choices'] = $my_cpt_arr;
return $field;
};
add_filter('acf/load_field/name=my_field_name', 'my_acf_field_checkbox');
Hope this helps someone
