Slim 3 - How to add 404 Template? - slim

Question

In Slim 2, I can over write the default 404 page easily,
// #ref: http://help.slimframework.com/discussions/problems/4400-templatespath-doesnt-change
$app->notFound(function () use ($app) {
$view = $app->view();
$view->setTemplatesDirectory('./public/template/');
$app->render('404.html');
});
But in Slim 3,
// ref: http://www.slimframework.com/docs/handlers/not-found.html
//Override the default Not Found Handler
$container['notFoundHandler'] = function ($c) {
return function ($request, $response) use ($c) {
return $c['response']
->withStatus(404)
->withHeader('Content-Type', 'text/html')
->write('Page not found');
};
};
How can I add my 404 template ('404.html') in?

Answer 1

Create your container:
// Create container
$container = new \Slim\Container;
// Register component on container
$container['view'] = function ($c) {
$view = new \Slim\Views\Twig('./public/template/');
$view->addExtension(new \Slim\Views\TwigExtension(
$c['router'],
$c['request']->getUri()
));
return $view;
};
//Override the default Not Found Handler
$container['notFoundHandler'] = function ($c) {
return function ($request, $response) use ($c) {
return $c['view']->render($response->withStatus(404), '404.html', [
"myMagic" => "Let's roll"
]);
};
};
Construct the \Slim\App object using the $container and run:
$app = new \Slim\App($container);
$app->run();

Answer 2

Option 1:
use Twig (or any other templating engine)
Option 2:
$notFoundPage = file_get_contents($path_to_404_html);
$response->write($notFoundPage);