silextest.php

<?php
//Module.php
namespace CheeseAgent\Core;

use \Silex\ServiceProviderInterface;
use \Silex\Application;
use \Symfony\Component\HttpFoundation\Response;
use \Symfony\Component\HttpFoundation\Request;
use \Symfony\Component\HttpKernel\KernelEvents;
use \CheeseAgent\Core\Value\Gender;

class Module implements ServiceProviderInterface {

    public function boot(Application $app) {
	
    }

    public function register(Application $app) {
    $app['interaction.registrationFormView'] = $app->share(function($app) {
	    return new Context\Guest\RegistrationFormViewContext($app['repository.bodypart'], $app['repository.selectedLook']);
	});
	$app->get('/test', 'interaction.registrationFormView')
		->convert('request', function($request) use ($app) {
		    return new \CheeseAgent\Core\Request\RegistrationFormViewRequest($app['initialGender']);
		});
$app->before(function (Request $request) {
	    $request->attributes->set('request', $request);
	});
	$app['resolver'] = $app->share($app->extend('resolver', function ($resolver, $app) {
		    $resolver = new ControllerResolver($resolver, $app);
		    return $resolver;
		}));
    }
    return $app;
}

//bootstrap.php
use \Silex\Application;
use \Silex\Provider\ServiceControllerServiceProvider;
use \Silex\Provider\DoctrineServiceProvider;
use \Silex\Provider\SessionServiceProvider;
use \Mustache\Silex\Provider\MustacheServiceProvider;
use \Igorw\Silex\ConfigServiceProvider;

$app = new Application();
$app->register(new CheeseAgent\Core\Module());
return $app;

//controller resolver

namespace CheeseAgent\Core;

use \Symfony\Component\HttpKernel\Controller\ControllerResolverInterface;
use \Symfony\Component\HttpFoundation\Request;
use \Pimple;

class ControllerResolver implements ControllerResolverInterface {

    protected $resolver;
    protected $container;

    public function __construct(ControllerResolverInterface $resolver, Pimple $container) {
	$this->resolver = $resolver;
	$this->container = $container;
    }

    public function getController(Request $request) {
	$controller = $request->attributes->get('_controller', null);

	if (!is_string($controller) || !isset($this->container[$controller]) || !method_exists($this->container[$controller], 'invoke')) {
	     throw new \InvalidArgumentException(sprintf('Invalid interaction "%s".', $controller));
	}
	
	
	$convertedRequest = $request->attributes->get('request');
	var_dump($convertedRequest); //httpfoundation/request 
	return $this->container[$controller]->invoke($request);
    }

    public function getArguments(Request $request, $controller) {
	return $this->resolver->getArguments($request, $controller);
    }

}