Reply To: update_field() with field type User

• John Huebner

• July 25, 2017 at 7:23 am

Get the value of the field without formatting and supply the post ID of the post that you want to update. Get Field: https://www.advancedcustomfields.com/resources/get_field/; Update Field: https://www.advancedcustomfields.com/resources/update_field/

// $post_id is the ID of the post you want to update
// 3rd arg == false tells ACF not to format the value
// $users will == an array or user IDs
$users = get_field('user_field_name', $post_id, false);

// add the users ID to the array
$users[] = $new_user_id_to_add;

// update the field
// $selector == the field key of the field to update
update_field($selector, $users, $post_id);