/**
* @param $cart
* @param ApiResponse $response
* @return \RestApiBundle\Entity\Cart
*/
public function add($cart, ApiResponse $response)
{
$cart = $this->em->getRepository('RestApiBundle:Cart')->add($cart);
$response->setStatusCode(Response::HTTP_OK);
$response->setId($cart->getItemId());
$response->addHeader('Location', '/path_to_cart/' . $cart->getItemId());
return $cart;
}
