CakePHP tutorials error, is this right?

Hey people,

I'm new to CakePHP and just learning from the tutorials atm,
I've followed the blog & authentication tutorials and all is going good, i like how simple cake is :) But i've came across 1 problem and that is logging out..

To make it work i've added 'logout' within the

    public function beforeFilter() {          $this->Auth->allow('index', 'view','logout');      }

Where as in the tutorial it doesn't say add it, it also says the following.

"What we did in the beforeFilter function was to tell the AuthComponent to not  require a login for all index and view actions, in every controller. We want  our visitors to be able to read and list the entries without registering in the  site."

link: http://book.cakephp.org/2.0/en/tutorials-and-examples/blog-auth-example/auth.html#authentication-login-and-logout

So to make it work i've added a logout method to a function that is to allow pages to be viewed without a login.. 
Does this make sense? Why would you need to allow a logout page to be veiewable without a login to logout?.

love to hear back people as I want to know if i'm doing this right.

 

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