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<?php
namespace Drupal\node\Form;
use Drupal\Core\Database\Connection;
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;
class NodeRevisionDeleteForm extends ConfirmFormBase {
protected $revision;
protected $nodeStorage;
protected $nodeTypeStorage;
protected $connection;
protected $dateFormatter;
public function __construct(EntityStorageInterface $node_storage, EntityStorageInterface $node_type_storage, Connection $connection, DateFormatterInterface $date_formatter) {
$this->nodeStorage = $node_storage;
$this->nodeTypeStorage = $node_type_storage;
$this->connection = $connection;
$this->dateFormatter = $date_formatter;
}
public static function create(ContainerInterface $container) {
$entity_type_manager = $container
->get('entity_type.manager');
return new static($entity_type_manager
->getStorage('node'), $entity_type_manager
->getStorage('node_type'), $container
->get('database'), $container
->get('date.formatter'));
}
public function getFormId() {
return 'node_revision_delete_confirm';
}
public function getQuestion() {
return $this
->t('Are you sure you want to delete the revision from %revision-date?', [
'%revision-date' => $this->dateFormatter
->format($this->revision
->getRevisionCreationTime()),
]);
}
public function getCancelUrl() {
return new Url('entity.node.version_history', [
'node' => $this->revision
->id(),
]);
}
public function getConfirmText() {
return $this
->t('Delete');
}
public function buildForm(array $form, FormStateInterface $form_state, NodeInterface $node_revision = NULL) {
$this->revision = $node_revision;
$form = parent::buildForm($form, $form_state);
return $form;
}
public function submitForm(array &$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();
$this
->messenger()
->addStatus($this
->t('Revision from %revision-date of @type %title has been deleted.', [
'%revision-date' => $this->dateFormatter
->format($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(),
]);
}
}
}