protected function NodeStorageController::preSaveRevision

Overrides Drupal\Core\Entity\DatabaseStorageController::preSaveRevision().

Overrides DatabaseStorageController::preSaveRevision

File

drupal/core/modules/node/lib/Drupal/node/NodeStorageController.php, line 137

Definition of Drupal\node\NodeStorageController.

Class

NodeStorageController

Controller class for nodes.

Namespace

Code

protected function preSaveRevision(\stdClass $record, EntityInterface $entity) {
  if ($entity
    ->isNewRevision()) {

    // When inserting either a new node or a new node revision, $node->log
    // must be set because {node_field_revision}.log is a text column and
    // therefore cannot have a default value. However, it might not be set at
    // this point (for example, if the user submitting a node form does not
    // have permission to create revisions), so we ensure that it is at least
    // an empty string in that case.
    // @todo Make the {node_field_revision}.log column nullable so that we
    //   can remove this check.
    if (!isset($record->log)) {
      $record->log = '';
    }
  }
  elseif (isset($entity->original) && (!isset($record->log) || $record->log === '')) {

    // If we are updating an existing node without adding a new revision, we
    // need to make sure $entity->log is reset whenever it is empty.
    // Therefore, this code allows us to avoid clobbering an existing log
    // entry with an empty one.
    $record->log = $entity->original->log;
  }
}