调试Ajax回调

Question

目标:打印/转储要调试的$formState值

我正在修改一个表单，其功能起作用：

$form['elements']['location']['deparment']['#ajax'] = [
  'callback' => 'myAjaxCallback',
  'event' => 'change',
  'progress' => [
    'type' => 'throbber',
    'message' => t('Verifying entry...'),
  ]
];

但是我想要的是能够打印出$formState在myAjaxCallback中

function myAjaxCallback(array &$form, FormStateInterface $formState){
 $response = new AjaxResponse();
 print_r($formState); //I've tried, with memory_limit=-1 . it just hangs
 dump($formState); //gives me File upload exceeds. This comes from issue with using dump in ajax
                     https://drupal.stackexchange.com/questions/250078/ajax-submission-leads-to-an-unrecoverable-error-occurred-the-uploaded-file-l

 return $response
}

我还读过https://www.drupal.org/docs/drupal-apis/javascript-api/ajax-forms并尝试过调试AJAX回调函数，其中包括：

$response = new AjaxResponse();
$debugOut = @Kint::dump($formState); //but this uses dump too, which gives me ajax errors

所以dd($formState->getValues());有点工作。这就是它展示给我的。所以，正如你所看到的，我现在可以看到变量。这不是最好的，而是可读的。

然而，如果我去/webform?ajax_form=1，它甚至是不可读的。

为了能够调试变量$formState，我的想法已经用完了。

Answer 1

@sonfd Xdebug帮助打印出漂亮的值。不再有print_r()或kint()错误。