Procedure

Standard project layout:

app/
    Config/
        routing.yml
    Controller/
        home.php
    View/
        home.html.twig
web/
    index.php

Routing configuration example:

homepage:
    path:   /
    defaults:  { _controller: MyApp\Controller\home() }

Controller:

<?php

namespace MyApp\Controller;

function home(Request $request, ResponseHelper $helper)
{
    return $helper->render('home.html.twig');
}

Dependency injection in the controller

PHP-DI is used for dependency injection in the function's parameters:

function home(Request $request, MyService $service)
{
}

You can inject:

• the request by type-hinting the parameter with Symfony's request object (Symfony\Component\HttpFoundation\Request)
• a request parameter by naming your function parameter like the request parameter
• a service from the container, by type-hinting the parameter with the class name

Getting started

This project is just an experiment, so this is not really serious stuff (for now at least).

To use it, require "mnapoli/procedure" in composer, and then here is an example of a front controller (web/index.php):

// Create and configure the container (see PHP-DI's documentation)
$builder = new ContainerBuilder();
$container = $builder->build();

$request = Request::createFromGlobals();
$eventDispatcher = new EventDispatcher();

// Routing
$locator = new FileLocator(array(__DIR__ . '/../app/'));
$context = new RequestContext();
$context->fromRequest($request);
$router = new Router(
    new YamlFileLoader($locator),
    'routing.yml',
    array(),
    $context
);
$eventDispatcher->addSubscriber(new RouterListener());

// Configure the HttpKernel
$resolver = new FunctionControllerResolver($container, new PSR4FunctionLoader());
$kernel = new HttpKernel($eventDispatcher, $resolver);

// Handle the request
$response = $kernel->handle($request);
$response->send();
$kernel->terminate($request, $response);

(this is just a mock up, not tested)