Version 1

[yaffs-website] / web / core / modules / node / src / Form / NodeRevisionRevertForm.php

diff --git a/web/core/modules/node/src/Form/NodeRevisionRevertForm.php b/web/core/modules/node/src/Form/NodeRevisionRevertForm.php
new file mode 100644 (file)
index 0000000..9702d35
--- /dev/null
+++ b/web/core/modules/node/src/Form/NodeRevisionRevertForm.php
@@ -0,0 +1,155 @@
+<?php
+
+namespace Drupal\node\Form;
+
+use Drupal\Core\Datetime\DateFormatterInterface;
+use Drupal\Core\Entity\EntityStorageInterface;
+use Drupal\Core\Form\ConfirmFormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Url;
+use Drupal\node\NodeInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Provides a form for reverting a node revision.
+ */
+class NodeRevisionRevertForm extends ConfirmFormBase {
+
+  /**
+   * The node revision.
+   *
+   * @var \Drupal\node\NodeInterface
+   */
+  protected $revision;
+
+  /**
+   * The node storage.
+   *
+   * @var \Drupal\Core\Entity\EntityStorageInterface
+   */
+  protected $nodeStorage;
+
+  /**
+   * The date formatter service.
+   *
+   * @var \Drupal\Core\Datetime\DateFormatterInterface
+   */
+  protected $dateFormatter;
+
+  /**
+   * The time service.
+   *
+   * @var \Drupal\Component\Datetime\TimeInterface
+   */
+  protected $time;
+
+  /**
+   * Constructs a new NodeRevisionRevertForm.
+   *
+   * @param \Drupal\Core\Entity\EntityStorageInterface $node_storage
+   *   The node storage.
+   * @param \Drupal\Core\Datetime\DateFormatterInterface $date_formatter
+   *   The date formatter service.
+   */
+  public function __construct(EntityStorageInterface $node_storage, DateFormatterInterface $date_formatter) {
+    $this->nodeStorage = $node_storage;
+    $this->dateFormatter = $date_formatter;
+    $this->time = \Drupal::service('datetime.time');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('entity.manager')->getStorage('node'),
+      $container->get('date.formatter')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormId() {
+    return 'node_revision_revert_confirm';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getQuestion() {
+    return t('Are you sure you want to revert to the revision from %revision-date?', ['%revision-date' => $this->dateFormatter->format($this->revision->getRevisionCreationTime())]);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCancelUrl() {
+    return new Url('entity.node.version_history', ['node' => $this->revision->id()]);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getConfirmText() {
+    return t('Revert');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getDescription() {
+    return '';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state, $node_revision = NULL) {
+    $this->revision = $this->nodeStorage->loadRevision($node_revision);
+    $form = parent::buildForm($form, $form_state);
+
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    // The revision timestamp will be updated when the revision is saved. Keep
+    // the original one for the confirmation message.
+    $original_revision_timestamp = $this->revision->getRevisionCreationTime();
+
+    $this->revision = $this->prepareRevertedRevision($this->revision, $form_state);
+    $this->revision->revision_log = t('Copy of the revision from %date.', ['%date' => $this->dateFormatter->format($original_revision_timestamp)]);
+    $this->revision->setRevisionCreationTime($this->time->getRequestTime());
+    $this->revision->setChangedTime($this->time->getRequestTime());
+    $this->revision->save();
+
+    $this->logger('content')->notice('@type: reverted %title revision %revision.', ['@type' => $this->revision->bundle(), '%title' => $this->revision->label(), '%revision' => $this->revision->getRevisionId()]);
+    drupal_set_message(t('@type %title has been reverted to the revision from %revision-date.', ['@type' => node_get_type_label($this->revision), '%title' => $this->revision->label(), '%revision-date' => $this->dateFormatter->format($original_revision_timestamp)]));
+    $form_state->setRedirect(
+      'entity.node.version_history',
+      ['node' => $this->revision->id()]
+    );
+  }
+
+  /**
+   * Prepares a revision to be reverted.
+   *
+   * @param \Drupal\node\NodeInterface $revision
+   *   The revision to be reverted.
+   * @param \Drupal\Core\Form\FormStateInterface $form_state
+   *   The current state of the form.
+   *
+   * @return \Drupal\node\NodeInterface
+   *   The prepared revision ready to be stored.
+   */
+  protected function prepareRevertedRevision(NodeInterface $revision, FormStateInterface $form_state) {
+    $revision->setNewRevision();
+    $revision->isDefaultRevision(TRUE);
+
+    return $revision;
+  }
+
+}