slim 3 gist 2

index.php

//Let's configure it.
// Fetch DI Container
$container = $app->getContainer();

// Register Twig View helper and configure it
$container['view'] = function ($c) {
    //You can change this as you want
    $view = new \Slim\Views\Twig('templates', [
        'cache' => false //or specify a cache directory
    ]);

    // Instantiate and add Slim specific extension
    $view->addExtension(new Slim\Views\TwigExtension(
        $c['router'],
        $c['request']->getUri()
    ));

    return $view;
};