Slim 3 - How to add multiple middleware classes on a route?

Question

I know how to add multiple middleware class in $app:

$app->add( new Middlewares\VerifyCsrfToken() );
$app->add( new Middlewares\RemoveTrailingSlash() );

But how on route?

$app->get('/', function($request, $response){
     return $response;
})->add( new Middlewares\VerifyCsrfToken() )
  ->add( new Middlewares\RemoveTrailingSlash() );

Answer 1

As noted in the comments, add() returns an instance of the Route object, so you can simply chain multiple add()s together.

This unit test shows how to do it:

$app = new App();

$app->get('/', function ($req, $res) {
    return $res->write('Center');
})->add(function ($req, $res, $next) {
    $res->write('In1');
    $res = $next($req, $res);
    $res->write('Out1');
    return $res;
})->add(function ($req, $res, $next) {
    $res->write('In2');
    $res = $next($req, $res);
    $res->write('Out2');
    return $res;
});