/**
* @param $entityname
* @return BaseTransformer
* @throws \Exception
*/
public function getTransformer($entityname = null)
{
if (!$this->transformer || $entityname !== null && $this->transformer->getCurrentResourceKey() !== $entityname) {
if (null === $entityname) {
throw new \Exception('transformer is empty, specify the entity name into the parameter');
}
$this->transformer = $this->transformerResolver->resolve($entityname);
}
return $this->transformer;
}
/**
* @param $embed
* @param $parentObject
* @param $version
*
* @return array
* @throws \Exception
*/
protected function getEmbedData($embed, $parentObject, $version = "v2")
{
$transformer = $this->transformerResolver->resolve($embed);
$transformer = $this->initTransformer($transformer);
return [$transformer->getCurrentResourceKey() => $this->getTransformerData($transformer, $parentObject, $version)];
}