protected function VersionByRel::getRevisionId in JSON:API 8.2

Gets the revision ID.

Parameters

\Drupal\Core\Entity\EntityInterface $entity: The entity.

string $version_argument: A value used to derive a revision ID for the given entity.

Return value

int The revision ID.

Throws

\Drupal\jsonapi\Revisions\VersionNotFoundException When the revision does not exist.

\Drupal\jsonapi\Revisions\InvalidVersionIdentifierException When the revision ID is not valid.

Overrides NegotiatorBase::getRevisionId

File

src/Revisions/VersionByRel.php, line 47

Class

VersionByRel

Revision ID implementation for the default or latest revisions.

Namespace

Drupal\jsonapi\Revisions

Code

protected function getRevisionId(EntityInterface $entity, $version_argument) {
  assert($entity instanceof RevisionableInterface);
  switch ($version_argument) {
    case static::WORKING_COPY:

      /* @var \Drupal\Core\Entity\RevisionableStorageInterface $entity_storage */
      $entity_storage = $this->entityTypeManager
        ->getStorage($entity
        ->getEntityTypeId());
      return static::ensureVersionExists($entity_storage
        ->getLatestRevisionId($entity
        ->id()));
    case static::LATEST_VERSION:

      // The already loaded revision will be the latest version by default.
      // @see \Drupal\Core\Entity\Sql\SqlContentEntityStorage::buildQuery().
      return $entity
        ->getLoadedRevisionId();
    default:
      $message = sprintf('The version specifier must be either `%s` or `%s`, `%s` given.', static::LATEST_VERSION, static::WORKING_COPY, $version_argument);
      throw new InvalidVersionIdentifierException($message);
  }
}