function ($request, $response, $next = null) use ($container, $middleware) {
$invokable = $container->get($middleware);
if (! is_callable($invokable)) {
throw new Exception\InvalidMiddlewareException(sprintf(
'Lazy-loaded middleware "%s" is not invokable',
$middleware
));
}
return $invokable($request, $response, $next);
};
This is done to delay fetching the middleware until it is actually used;
the upshot is that you will not be notified if the service is invalid to
use as middleware until runtime.
Middleware may also be passed as an array; each item in the array must
resolve to middleware eventually (i.e., callable or service name).
Finally, ensures that the route middleware is only ever registered
once. public function pipe($path, $middleware = null)
{
if (null === $middleware) {
$middleware = $this->prepareMiddleware($path, $this->container);
$path = '/';
}
if (!is_callable($middleware) && (is_string($middleware) || is_array($middleware))) {
$middleware = $this->prepareMiddleware($middleware, $this->container);
}
if ($middleware === [$this, 'routeMiddleware'] && $this->routeMiddlewareIsRegistered) {
return $this;
}
if ($middleware === [$this, 'dispatchMiddleware'] && $this->dispatchMiddlewareIsRegistered) {
return $this;
}
parent::pipe($path, $middleware);
if ($middleware === [$this, 'routeMiddleware']) {
$this->routeMiddlewareIsRegistered = true;
}
if ($middleware === [$this, 'dispatchMiddleware']) {
$this->dispatchMiddlewareIsRegistered = true;
}
return $this;
} public static function setUpBeforeClass()
{
// Load configuration
$config = (require __DIR__ . '/../config/config.php');
// Override config settings
$config['debug'] = true;
$config['config_cache_enabled'] = false;
$dependencies = $config['dependencies'];
$dependencies['services']['config'] = $config;
// Build container
self::$container = new ServiceManager($dependencies);
// Get application from container
self::$app = self::$container->get(Application::class);
self::$app->raiseThrowables();
// Setup middleware
self::$app->pipe(ServerUrlMiddleware::class);
self::$app->pipe(ErrorHandler::class);
self::$app->pipe(SessionMiddleware::class);
self::$app->pipeRoutingMiddleware();
self::$app->pipe(UrlHelperMiddleware::class);
self::$app->pipeDispatchMiddleware();
self::$app->pipe(NotFoundHandler::class);
// Setup routes
self::$app->route('/', Action\HomePageAction::class, ['GET'], 'home');
self::$app->route('/blog', Action\BlogIndexAction::class, ['GET'], 'blog');
self::$app->route('/blog/feed.xml', Action\BlogXmlFeedAction::class, ['GET'], 'feed');
self::$app->route('/blog/{id:[0-9a-zA-Z\\-]+}', Action\BlogPostAction::class, ['GET'], 'blog.post');
self::$app->route('/code', Action\CodeAction::class, ['GET'], 'code');
self::$app->route('/contact', Action\ContactAction::class, ['GET', 'POST'], 'contact');
}
