aleph1.co.uk Git - yaffs-website/blob - web/core/modules/system/tests/modules/form_test/src/Form/FormTestRedirectForm.php

   1 <?php
   2
   3 namespace Drupal\form_test\Form;
   4
   5 use Drupal\Core\Form\FormBase;
   6 use Drupal\Core\Form\FormStateInterface;
   7 use Drupal\Core\Url;
   8
   9 /**
  10  * Form builder to detect form redirect.
  11  */
  12 class FormTestRedirectForm extends FormBase {
  13
  14   /**
  15    * {@inheritdoc}
  16    */
  17   public function getFormId() {
  18     return 'form_test_redirect';
  19   }
  20
  21   /**
  22    * {@inheritdoc}
  23    */
  24   public function buildForm(array $form, FormStateInterface $form_state) {
  25     $form['redirection'] = [
  26       '#type' => 'checkbox',
  27       '#title' => t('Use redirection'),
  28     ];
  29     $form['destination'] = [
  30       '#type' => 'textfield',
  31       '#title' => t('Redirect destination'),
  32       '#states' => [
  33         'visible' => [
  34           ':input[name="redirection"]' => ['checked' => TRUE],
  35         ],
  36       ],
  37     ];
  38     $form['submit'] = [
  39       '#type' => 'submit',
  40       '#value' => t('Submit'),
  41     ];
  42
  43     return $form;
  44   }
  45
  46   /**
  47    * {@inheritdoc}
  48    */
  49   public function submitForm(array &$form, FormStateInterface $form_state) {
  50     if (!$form_state->isValueEmpty('redirection')) {
  51       if (!$form_state->isValueEmpty('destination')) {
  52         // The destination is a random URL, so we can't use routed URLs.
  53         // @todo Revist this in https://www.drupal.org/node/2418219.
  54         $form_state->setRedirectUrl(Url::fromUserInput('/' . $form_state->getValue('destination')));
  55       }
  56     }
  57     else {
  58       $form_state->disableRedirect();
  59     }
  60   }
  61
  62 }