How should I create a log off button in my menu bar that's rendered by a view helper?

Question

I have a subnav bar in my module created from a view partial via a helper.

Here is the config in module.config.php:

'navigation' => array(
    'default' => array(
        array(
            'label' => 'Create',
            'route' => 'mymodule\Create',
        ),
        array(
            'label' => 'View',
            'route' => 'mymodule\view',
        ),
        array(
            'label' => 'Search',
            'route' => 'mymodule\search',
        ),
        array(
            'label' => 'Log Off',
            'route' => 'mymodule\logoff',
        ),
    ),
),

);

So here is my problem, I don't just want to redirect the user to the login page, I want to clear their session and THEN redirect them to the login page. I also don't want to have the login page just clear the session whenever a user navigates to it (in case they logged in and clicked the back button accidentally).

So what is the best way to handle this with my current config? I was thinking I could have my view helper that renders the partial set a flag in the session which the logon page would read and act accordingly- it would check for a "logoffButtonPress" flag in the session or something. But is it appropriate to do something like this in a view helper? Is this even possible in a view helper?

Answer 1

Why not just have the button target a logoutAction?

I'm using BjyAuthorise and ZfcUser modules but the process of clearing the session and redirecting is the same.

LoginController

public function logoutAction()
{
    $this->authService->logout();

    $redirect = $this->params('redirect', false);

    if ($redirect) {
        return $this->redirect()->toUrl($redirect);
    }

    return $this->redirect()->toRoute(
        $this->config->getLogoutRedirectRoute()
    );
}

AuthService

public function logout()
{
    $adapter = $this->authService->getAdapter();

    $adapter->resetAdapters();
    $adapter->logoutAdapters();

    $this->authService->clearIdentity();
}

Answer 2

Like Alex says, that is the way to do that.

This code is correct

    array(
        'label' => 'Log Off',
        'route' => 'mymodule\logoff',
    ),

So, you need to set a logoff action to 'mymodule\logoff' route, clear the session and redirect the user to login or home or what you want.

On the login action you dont need to clear session.