aleph1.co.uk Git - yaffs-website/blob - web/core/modules/page_cache/tests/modules/page_cache_form_test.module

   1 <?php
   2
   3 /**
   4  * @file
   5  * Provides functionality for testing form caching.
   6  */
   7
   8 use Drupal\Core\Form\FormStateInterface;
   9
  10 /**
  11 * Implements hook_form_FORM_ID_alter().
  12 */
  13 function page_cache_form_test_form_page_cache_form_test_alter(&$form, FormStateInterface $form_state, $form_id) {
  14   // This runs earlier than system_form_alter() so we fore-go the immutability
  15   // check to the process callback, by which time system_form_alter() has run.
  16   $form['#process'][] = 'page_cache_form_test_form_page_cache_form_test_process';
  17 }
  18
  19 /**
  20  * Process callback to check immutability.
  21  */
  22 function page_cache_form_test_form_page_cache_form_test_process($form, FormStateInterface $form_state) {
  23   if (isset($form_state->getBuildInfo()['immutable']) && $form_state->getBuildInfo()['immutable']) {
  24     $form['#suffix'] = 'Immutable: TRUE';
  25   }
  26   else {
  27     $form['#suffix'] = 'Immutable: FALSE';
  28   }
  29   return $form;
  30 }
  31
  32 /**
  33  * Implements hook_module_implements_alter().
  34  */
  35 function page_cache_form_test_module_implements_alter(&$implementations, $hook) {
  36   if ($hook === 'form_alter' && \Drupal::state()->get('page_cache_bypass_form_immutability', FALSE)) {
  37     // Disable system_form_alter
  38     unset($implementations['system']);
  39   }
  40 }