Reply To: Front-end user registration

• John Huebner

• June 7, 2017 at 10:52 am

calling acf_form_head() is required before get_header() or before any output is created in header.php. Nothing will be created if you don’t because this function, or functions called by this function is where the apply_filters('acf/pre_save_post'... is called. Basically, nothing will be saved if this acf_form_head() is not called.

The only error I see in your filter is

    //register user
    $user_id = wp_create_user( $username, $password, $email );

    //update other user info
    wp_update_user( array(
        'ID'            => $user_id,
        'first_name'    => $_POST['fields']['field_593642087f8f5'],
        'last_name'     => $_POST['fields']['field_593642267f8f6'],
        'display_name'  => $_POST['fields']['field_593642087f8f5'] . ' ' . $_POST['fields']['field_593642267f8f6']
    ) );

   // if you don't want the above fields also saved as custom fields for the user
  unset(
    $_POST['fields']['field_593642087f8f5'],
    $_POST['fields']['field_593642267f8f6'],
    $_POST['fields']['field_593642087f8f5'],
    $_POST['fields']['field_593642267f8f6']
  )
    
    // for ACF, you need to return
    return 'user_'.$user_id;