Version 1

[yaffs-website] / web / core / modules / system / tests / modules / form_test / src / Form / FormTestStoragePageCacheForm.php

diff --git a/web/core/modules/system/tests/modules/form_test/src/Form/FormTestStoragePageCacheForm.php b/web/core/modules/system/tests/modules/form_test/src/Form/FormTestStoragePageCacheForm.php
new file mode 100644 (file)
index 0000000..f27e5e0
--- /dev/null
+++ b/web/core/modules/system/tests/modules/form_test/src/Form/FormTestStoragePageCacheForm.php
@@ -0,0 +1,84 @@
+<?php
+
+namespace Drupal\form_test\Form;
+
+use Drupal\Core\Form\FormBase;
+use Drupal\Core\Form\FormStateInterface;
+
+class FormTestStoragePageCacheForm extends FormBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormId() {
+    return 'form_test_storage_page_cache';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state) {
+    $form['title'] = [
+      '#type' => 'textfield',
+      '#title' => 'Title',
+      '#required' => TRUE,
+    ];
+
+    $form['test_build_id_old'] = [
+      '#type' => 'item',
+      '#title' => 'Old build id',
+      '#markup' => 'No old build id',
+    ];
+
+    $form['submit'] = [
+      '#type' => 'submit',
+      '#value' => 'Save',
+    ];
+
+    $form['rebuild'] = [
+      '#type' => 'submit',
+      '#value' => 'Rebuild',
+      '#submit' => [[$this, 'form_test_storage_page_cache_rebuild']],
+    ];
+
+    $form['#after_build'] = [[$this, 'form_test_storage_page_cache_old_build_id']];
+
+    return $form;
+  }
+
+  /**
+   * Form element #after_build callback: output the old form build-id.
+   */
+  public function form_test_storage_page_cache_old_build_id($form) {
+    if (isset($form['#build_id_old'])) {
+      $form['test_build_id_old']['#plain_text'] = $form['#build_id_old'];
+    }
+    return $form;
+  }
+
+  /**
+   * Form submit callback: Rebuild the form and continue.
+   */
+  public function form_test_storage_page_cache_rebuild($form, FormStateInterface $form_state) {
+    $form_state->setRebuild();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function validateForm(array &$form, FormStateInterface $form_state) {
+    // Test using form cache when re-displaying a form due to validation
+    // errors.
+    if ($form_state->hasAnyErrors()) {
+      $form_state->setCached();
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    // Nothing must happen.
+  }
+
+}