How to refer to route name with FOSRestBundle - symfony

Question

Candidate Controller
class DefaultController extends PreviewMeController
{
/**
* Complete registration process for candidate
*
* #ApiDoc(
* section="Candidate",
* tags={"common"},
* )
*
* #Rest\View()
* #Post("/ua/register/candidate/{token}")
*
* #param Request $request
* #return \FOS\RestBundle\View\View
*/
public function registerCandidateAction($token)
{
}
}
Candidate routing.yml
candidate_api_routes:
type: rest
prefix: /v1
resource: "CandidateBundle\Controller\DefaultController"
name_prefix: "api_1_c_"
AppBundle Controller
/**
* Register a new user on the website
*
* #ApiDoc(
* section="Common Functionalities",
* tags={"common"},
* requirements={
* {"name"="email", "dataType"="string", "description"="Email of user"},
* {"name"="username", "dataType"="string", "description"="Username. Keep this same as email address"},
* {"name"="first_name", "dataType"="string", "description"="First name of user"},
* {"name"="last_name", "dataType"="string", "description"="Last name of user"},
* {"name"="plainPassword", "dataType"="array", "requirement"="['first':'password','second':'password']", "description"="Plain password. Send as an array with 'first' and 'second' as array keys"},
* {"name"="user_type","dataType"="string","requirement"="employer|candidate","description"="Employer or candidate user type"}
* },
* statusCodes={
* 200 = "When user is successfully registered",
* 400="When there is a validation error in the registration process"
* }
* )
* #Post("/ua/register")
* #Rest\View()
*
* #param Request $request
* #return array|\FOS\RestBundle\View\View
*/
public function registerAction(Request $request)
{
/** #var $formFactory \FOS\UserBundle\Form\Factory\FactoryInterface */
$formFactory = $this->get('fos_user.registration.form.factory');
/** #var UserManager $fos_userManager */
$fos_userManager = $this->get('fos_user.user_manager');
/** #var User $user */
$user = $fos_userManager->createUser();
$user->setEnabled(true);
$user->setUserType($request->request->get('user_type'));
//remove user_type from request so it's not forwarded to form
$request->request->remove('user_type');
$form = $formFactory->createForm();
$form->setData($user);
$form->submit($request->request->all());
if( $form->isValid() ){
$event = new UserEvent($user);
$dispatcher = $this->get('event_dispatcher');
$dispatcher->dispatch(PmEvents::REGISTRATION_SUCCESS, $event);
$fos_userManager->updateUser($user);
$wrapper = new PMResponseWrapper();
$wrapper->setData(array(
'ob_key' => $user->getObKey()
));
/** #var View $response */
$response = View::create($wrapper->getFormattedData());
$response->setLocation( $this->generateUrl('register_candidate') );
return $response;
}
return $this->view($form);
}
app/console debug:router dump
api_1_register POST ANY ANY /api/v1/ua/register
api_1_register_confirm_token POST ANY ANY /api/v1/ua/register/confirm_token/{token}
api_1_c_index GET ANY ANY /api/v1/index
api_1_c_register_candidate POST ANY ANY /api/v1/ua/register/candidate/{token}
Problem is even though registerCandidateAction shows up in debug:router, I am not able to call it with $this->generateUrl() in registerAction.
When I call this line $response->setNextUrl($this->generateUrl('register_candidate')); I get this error Unable to generate a URL for the named route \"register_candidate\" as such route does not exist.
Please help in finding what's wrong here.