Symfony2 passing parameters to twig

Question

I'm working with Symfony 2 and I want to pass from my controller to my twig template a simple string and then use it on my template to descriminate the user role. The controller code has something like :

public function modify_user_asAction(Request $request, $username)
{
    $stringtopass="admin";
    $um = $this->get('fos_user.user_manager');
    $user = $um->findUserByUsername($username);
    if($user == null){
        //error page here..
    }
    $form = $this->createForm(new UserForm(), $user);
    $form->handleRequest($request);
    if ($form->isValid()) {     
        $um->updateUser($user);
        return $this->redirect($this->generateUrl('acme_query_success'));
    }
     return $this->render('AcmeUserBundle:Default:modifyuserform.html.twig', array(
        'form' => $form->createView(),
    ));
}

I want to pass $stringtopass in the generateUrl (if it's possible). I can't find anything online. Thanks

Can you please provide the whole action, or at least the return statement ? — Brewal
– Brewal, Commented Nov 28, 2013 at 10:59
I don't know what you really are trying to do, but if you rely on a client side input to guess the user role, it sound like a nice security issue — Brewal
– Brewal, Commented Nov 28, 2013 at 11:05
If a user try to access ^/admin or ^/sadmin only and he's not logged in as admin or super_admin he's gonna be redirected to login page — offman
– offman, Commented Nov 28, 2013 at 11:17

Jovan Perovic · Accepted Answer · 2013-11-28 11:34:21Z

1

You are almost there!

API: generateUrl

Basically, just pass an array as second param to generateUrl.

return $this->redirect($this->generateUrl('acme_query_success', array('stringToPass' => $stringtopass)));

And also, @Brewal has a very valid point there. Be careful not to pass some sensitive data or leave unrestricted access to that controller's action. You could do more harm than good...

UPDATE:

public function acmeQuerySuccessAction(){
    // ... action's logic
    $stringToPass = $this->getRequest()->query->get('stringToPass');
    // .....

    return array(
          'stringToPass' => $stringToPass,
          // all other elements that you would normally return
    );
}

edited Nov 28, 2013 at 11:34

answered Nov 28, 2013 at 11:08

Jovan Perovic

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2 Comments

offman Over a year ago

Thanks! And how can I use it in twig file?

Jovan Perovic Over a year ago

That is whole another thing. When you redirect to acme_query_success it call another action (let's call it acmeQuerySuccessAction()). In there you separately forward request data to twig. Updating my answer with appropriate sample...

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