我突然在需要使用的時候發現我竟然沒有寫下：
<?php
function hook_form_alter(&$form, &$form_state)
{
$form['actions']['submit']['#submit'][] = 'custom_checkin_redirect';
}
function custom_checkin_redirect($form, &$form_state)
{
$form_state['redirect'] = 'check-in';
}
?>