SimpleDI plugin for CakePHP

Installation

You can install this plugin into your CakePHP application using composer.

The recommended way to install composer packages is:

composer require passchn/cakephp-simple-di

Load the plugin:

bin/cake plugin load Passchn/SimpleDI

Usage

In your Application.php:

public function services(ContainerInterface $container): void
{
    Configure::load('app_di');
    
    DIManager::create($container)
        // to add individual services: 
        ->addServices(Configure::readOrFail('DI.services'))
        /**
        * to collect multiple services, define a module: 
        * @see \Passchn\SimpleDI\Module\Module\ModuleInterface
        */
        ->addModules(Configure::readOrFail('DI.modules')) 
        /**
        * a plugin can define multiple modules: 
        * @see \Passchn\SimpleDI\Module\Plugin\PluginInterface
        */
        ->addPlugin(SomePlugin::class); 
}

Then, define Factories/Modules in your app_di.php:

return [
    'DI' => [
        'services' => [
            NewsletterService::class => NewsletterServiceFactory::class,
            CheckoutService::class => CheckoutServiceFactory::class,
            PaymentService::class => fn () => new PaymentService(),
        ],
        'modules' => [
            MyModule::class,
        ],
    ],
];

Factories should be Invokables or class-strings of Invokables.

You can then use the Service e.g. in Controller Actions:

class ExamplesController {
    
    public function someAction(NewsletterService $service): Response 
    {
        $service->doSomething();
    }
}

If real DI is not possible, e.g. in ViewCells, you can use the ServiceLocator to receive the container or Services.

Passchn\SimpleDI\Module\ServiceLocator\ServiceLocator::get(NewsletterService::class); // the service

This only works if you loaded the plugin or registered the container yourself, e.g.:

// in your Application::services()
ServiceLocator::setContainer($container);