只有一个功能的每页的Slim 3 post

Question

I'm attempting to add a logout to each one of my pages when a POST request is sent. Currently my code is working but I have to define it for every route. Is there a way where I can have a $app->post() on my main routes file that will effect every page on my site?

For example, on my admin page I have to add this code just to get my logout working:

$app->post('/admin', function ($request, $response) {
    // Define POST data
    $params = $request->getParams();

    // Logout User
    if ($params['logout']) {
        // Logout
        User::logout();

        // Redirect to login page
        return $response->withHeader("Location", "/");
    }
});

Is there a way I can add this to a single file and every other page such as site.com/admin and site.com/panel will be able to access this?

Thanks

Answer 1

I solved it by using middleware.

// Middleware to logout
$app->add(function ($request, $response, $next) {
    // Define POST data
    $params = $request->getParams();

    // Logout User
    if ($params['logout']) {
        // Logout
        User::logout();

        // Redirect to login page
        return $response->withHeader("Location", "/");
    }

    // Return next middleware
    return $next($request, $response);
});