Anchor in URL when using Symfony's redirect function

I'm using

$this->redirect('route', array('id' => $id));

but I need to be able to put "#" anchor at the end but I can't find a way of doing that. Any ideas?

The code

$this->redirect('route', array('id' => $id));

returns /route/id/5 but I want to be able 开发者_高级运维to create /route/id/5#anchor7

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$this->redirect($this->generateUrl('route', array('id' => $id)) . '#anchor7');

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UPDATE:

In Symfony 3.2 you can do this:

// generating a URL with a fragment (/settings#password)
$this->redirectToRoute('user_settings', ['_fragment' => 'password']);

See https://symfony.com/blog/new-in-symfony-3-2-routing-improvements

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Using router :

$router->generateUrl('awesome_route') . '#comment-2';

This method is used by Fabien Potencier : https://github.com/symfony/symfony/issues/3910#issuecomment-5110238

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Similar but

$this->redirect('@routename?id='.$id.'#anchor7');

Works fine in Symfony 1.4 and seems slightly simpler solution