drupal - 将信息从 Drupal Forms API 验证函数传递到提交函数

Question

在 Drupal Forms API 表单的验证函数中，我尝试从用户的信用卡中扣款。如果成功，我想将引用号传递给提交函数，以便在那里使用。这样做的最佳方法是什么？

Answer 1

documentation说这个:

Note that as of Drupal 6, you can also simply store arbitrary variables in $form['#foo'] instead, as long as '#foo' does not conflict with any other internal property of the Form API.

所以你可以做这样的事情:

function form($form_state) {
//in your form definition function:
$form['#reference_number'] = 0;
}

function form_validate($form, &$form_state) {
  //try to charge card ...
  if ($card_charged) {
    $form_state['values']['#reference_number'] = $reference_number;
  }
}

function submit_form($form, &$form_state) {
  if (isset($form_state['values']['#reference_number'])) {
    $reference_number = $form_state['values']['#reference_number'];
    //do whatever you want
  }
}