Version 1

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

diff --git a/web/core/modules/node/src/Form/NodeRevisionDeleteForm.php b/web/core/modules/node/src/Form/NodeRevisionDeleteForm.php
new file mode 100644 (file)
index 0000000..86e5b59
--- /dev/null
+++ b/web/core/modules/node/src/Form/NodeRevisionDeleteForm.php
@@ -0,0 +1,132 @@
+<?php
+
+namespace Drupal\node\Form;
+
+use Drupal\Core\Database\Connection;
+use Drupal\Core\Entity\EntityStorageInterface;
+use Drupal\Core\Form\ConfirmFormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Url;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Provides a form for reverting a node revision.
+ */
+class NodeRevisionDeleteForm extends ConfirmFormBase {
+
+  /**
+   * The node revision.
+   *
+   * @var \Drupal\node\NodeInterface
+   */
+  protected $revision;
+
+  /**
+   * The node storage.
+   *
+   * @var \Drupal\Core\Entity\EntityStorageInterface
+   */
+  protected $nodeStorage;
+
+  /**
+   * The node type storage.
+   *
+   * @var \Drupal\Core\Entity\EntityStorageInterface
+   */
+  protected $nodeTypeStorage;
+
+  /**
+   * The database connection.
+   *
+   * @var \Drupal\Core\Database\Connection
+   */
+  protected $connection;
+
+  /**
+   * Constructs a new NodeRevisionDeleteForm.
+   *
+   * @param \Drupal\Core\Entity\EntityStorageInterface $node_storage
+   *   The node storage.
+   * @param \Drupal\Core\Entity\EntityStorageInterface $node_type_storage
+   *   The node type storage.
+   * @param \Drupal\Core\Database\Connection $connection
+   *   The database connection.
+   */
+  public function __construct(EntityStorageInterface $node_storage, EntityStorageInterface $node_type_storage, Connection $connection) {
+    $this->nodeStorage = $node_storage;
+    $this->nodeTypeStorage = $node_type_storage;
+    $this->connection = $connection;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    $entity_manager = $container->get('entity.manager');
+    return new static(
+      $entity_manager->getStorage('node'),
+      $entity_manager->getStorage('node_type'),
+      $container->get('database')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormId() {
+    return 'node_revision_delete_confirm';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getQuestion() {
+    return t('Are you sure you want to delete the revision from %revision-date?', ['%revision-date' => format_date($this->revision->getRevisionCreationTime())]);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCancelUrl() {
+    return new Url('entity.node.version_history', ['node' => $this->revision->id()]);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getConfirmText() {
+    return t('Delete');
+  }
+
+  /**
+   * {@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) {
+    $this->nodeStorage->deleteRevision($this->revision->getRevisionId());
+
+    $this->logger('content')->notice('@type: deleted %title revision %revision.', ['@type' => $this->revision->bundle(), '%title' => $this->revision->label(), '%revision' => $this->revision->getRevisionId()]);
+    $node_type = $this->nodeTypeStorage->load($this->revision->bundle())->label();
+    drupal_set_message(t('Revision from %revision-date of @type %title has been deleted.', ['%revision-date' => format_date($this->revision->getRevisionCreationTime()), '@type' => $node_type, '%title' => $this->revision->label()]));
+    $form_state->setRedirect(
+      'entity.node.canonical',
+      ['node' => $this->revision->id()]
+    );
+    if ($this->connection->query('SELECT COUNT(DISTINCT vid) FROM {node_field_revision} WHERE nid = :nid', [':nid' => $this->revision->id()])->fetchField() > 1) {
+      $form_state->setRedirect(
+        'entity.node.version_history',
+        ['node' => $this->revision->id()]
+      );
+    }
+  }
+
+}