function VersionByRel::getRevisionId

Overrides NegotiatorBase::getRevisionId

File

core/modules/jsonapi/src/Revisions/VersionByRel.php, line 47

Class

VersionByRel

Revision ID implementation for the default or latest revisions.

Namespace

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);
    }
}