Action is not executed

Question

Guys am creating an Auth module and inside my AuthController I have three methods:

1. loginAction()

2. autheticateAction()

3. logoutAction()

Problem is when I submit the form the autheticate() method is not executed :

$form->setAttribute('action', $this->url('login/process',array('action'     => 'authenticate', )));

The exception says 'I must have a view for that action':

Zend\View\Renderer\PhpRenderer::render: Unable to render template "auth/auth/authenticate"; resolver could not resolve to a file

I just need that method for process submiting data!!!

Inside loginAction() I just return form and messages for render and autheticationAction is for processing data:

public function loginAction()
{
    //if already login, redirect to success page
    if ($this->getAuthService()->hasIdentity()){
        return $this->redirect()->toRoute('success');
    }
    $form       = $this->getForm();
    return array(
        'form'      => $form,
        'messages'  => $this->flashmessenger()->getMessages()
    );
}
public function authenticateAction()
{
    $form       = $this->getForm();
    $redirect = 'login';
    $request = $this->getRequest();
    if ($request->isPost()){
        $form->setData($request->getPost());
        if ($form->isValid()){
            //check authentication...
            $this->getAuthService()->getAdapter()
                                   ->setIdentity($request->getPost('username'))
                                   ->setCredential($request->getPost('password'));
            $result = $this->getAuthService()->authenticate();
            foreach($result->getMessages() as $message)
            {
                //save message temporary into flashmessenger
                $this->flashmessenger()->addMessage($message);
            }
            if ($result->isValid()) {
                $redirect = 'success';
                //check if it has rememberMe :
                if ($request->getPost('rememberme') == 1 ) {
                    $this->getSessionStorage()
                         ->setRememberMe(1);
                    //set storage again
                    $this->getAuthService()->setStorage($this->getSessionStorage());
                }
                $this->getAuthService()->getStorage()->write($request->getPost('username'));
            }
        }
    }
    return $this->redirect()->toRoute($redirect);
}

And here my route config:

    'login' => array(
        'type'    => 'Literal',
        'options' => array(
            'route'    => '/auth',
            'defaults' => array(
                '__NAMESPACE__' => 'Application\Controller',
                'controller'    => 'Auth',
                'action'        => 'login',
            ),
        ),
        'may_terminate' => true,
        'child_routes' => array(
            'process' => array(
                'type'    => 'Segment',
                'options' => array(
                    'route'    => '/[:action]',
                    'constraints' => array(
                        'controller' => '[a-zA-Z][a-zA-Z0-9_-]*',
                        'action'     => '[a-zA-Z][a-zA-Z0-9_-]*',
                    ),
                    'defaults' => array(
                    ),
                ),
            ),
        ),
    ),

Is there a way to not define specific view for every action? I really don't need view for this autheticationAction()

Stack Trace:

#0 D:\xampp\htdocs\AddskProject\vendor\zendframework\zend-view\src\View.php(205): Zend\View\Renderer\PhpRenderer->render(Object(Zend\View\Model\ViewModel))
#1 D:\xampp\htdocs\AddskProject\vendor\zendframework\zend-view\src\View.php(233): Zend\View\View->render(Object(Zend\View\Model\ViewModel))
#2 D:\xampp\htdocs\AddskProject\vendor\zendframework\zend-view\src\View.php(198): Zend\View\View->renderChildren(Object(Zend\View\Model\ViewModel))
#3 D:\xampp\htdocs\AddskProject\vendor\zendframework\zend-mvc\src\View\Http\DefaultRenderingStrategy.php(103): Zend\View\View->render(Object(Zend\View\Model\ViewModel))
#4 [internal function]: Zend\Mvc\View\Http\DefaultRenderingStrategy->render(Object(Zend\Mvc\MvcEvent))
#5 D:\xampp\htdocs\AddskProject\vendor\zendframework\zend-eventmanager\src\EventManager.php(444): call_user_func(Array, Object(Zend\Mvc\MvcEvent))
#6 D:\xampp\htdocs\AddskProject\vendor\zendframework\zend-eventmanager\src\EventManager.php(205): Zend\EventManager\EventManager->triggerListeners('render', Object(Zend\Mvc\MvcEvent), Array)
#7 D:\xampp\htdocs\AddskProject\vendor\zendframework\zend-mvc\src\Application.php(353): Zend\EventManager\EventManager->trigger('render', Object(Zend\Mvc\MvcEvent))
#8 D:\xampp\htdocs\AddskProject\vendor\zendframework\zend-mvc\src\Application.php(328): Zend\Mvc\Application->completeRequest(Object(Zend\Mvc\MvcEvent))
#9 D:\xampp\htdocs\AddskProject\public\index.php(21): Zend\Mvc\Application->run()
#10 {main}