Session control Various controllers at the same page in Symfony 2?

i'm trying to control the session to forbid the access to some pages of my web app. The way is simple, a boolean session variable. The thing is there's one page for every action, but, i think is not elegant at all to ask in every action if the user is logged or not. How can i do this elegantly in a MVC architecture? It looks crappy this way. I was thinking that there is a parent action that redirects t开发者_JAVA百科o the final one, the one that renders the page, is it right? maybe i could make the check there.

public function createAction(Request $request){
        $sess = $this->getRequest()->getSession();
        if ($sess->get('logged') == true) {
        // ---- ACTION CODE GOES HERE ---- //
        }
}

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In Symfony2, if the sections of the site that need authorization are under the same path, you can use the access_control section in the security configuration:

# app/config/security.yml
security:
    # ...
    access_control:
        - { path: ^/secured/area, roles: ROLE_USER }

You can find more ways to secure your app in the book