Did you get an answer to this question? i also want to accomplish this.
Title = {field1} {field2} {field3} {field4}… i added your code below. i hope it is as easy as this..
Any ideas??
* add custom slug and title */
function my_post_title_updater( $post_id ) {
if ( get_post_type( $post_id ) == ‘venue’ ) {
$my_post = array();
$my_post[‘ID’] = $post_id;
$my_post[‘post_title’] = get_field( ‘venue_name’, ‘field2’, ‘field3’, $post_id );
wp_update_post( $my_post );
}
}
// run after ACF saves the $_POST[‘fields’] data
add_action(‘acf/save_post’, ‘my_post_title_updater’, 20);