/**
* Prepares a revision to be reverted.
*
* @param \Drupal\node\NodeInterface $revision
* The revision to be reverted.
*
* @return \Drupal\node\NodeInterface
* The prepared revision ready to be stored.
*/
protected function prepareRevertedRevision(NodeInterface $revision)
{
/** @var \Drupal\node\NodeInterface $default_revision */
$default_revision = $this->nodeStorage->load($revision->id());
// If the entity is translated, make sure only translations affected by the
// specified revision are reverted.
$languages = $default_revision->getTranslationLanguages();
if (count($languages) > 1) {
// @todo Instead of processing all the available translations, we should
// let the user decide which translations should be reverted. See
// https://www.drupal.org/node/2465907.
foreach ($languages as $langcode => $language) {
if ($revision->hasTranslation($langcode) && !$revision->getTranslation($langcode)->isRevisionTranslationAffected()) {
$revision_translation = $revision->getTranslation($langcode);
$default_translation = $default_revision->getTranslation($langcode);
foreach ($default_revision->getFieldDefinitions() as $field_name => $definition) {
if ($definition->isTranslatable()) {
$revision_translation->set($field_name, $default_translation->get($field_name)->getValue());
}
}
}
}
}
$revision->setNewRevision();
$revision->isDefaultRevision(TRUE);
return $revision;
}
