如何在预处理中获取用户密码表单，如用户登录

Question

如何在pre - process中获取用户密码表单，如用户登录

$form = Drupal::formBuilder()->getForm(DrupaluserFormUserLoginForm::class);
$variables['login_form'] = $render->renderPlain($form);

thanks in advance.

Answer 1

您需要在from submit函数之前添加自己的函数来获取表单数据

$form = Drupal::formBuilder()->getForm(DrupaluserFormUserLoginForm::class);
// Add your own function before form submit here
$variables['login_form'] = $render->renderPlain($form);