PHP code example of nette / di

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

nette / di example snippets

class Mail
{
	public string $subject;
	public string $message;
}

interface Mailer
{
	function send(Mail $mail, string $to): void;
}

interface Logger
{
	function log(string $message): void;
}

class NewsletterManager
{
	private Mailer $mailer;
	private Logger $logger;

	public function __construct(Mailer $mailer, Logger $logger)
	{
		$this->mailer = $mailer;
		$this->logger = $logger;
	}

	public function distribute(array $recipients): void
	{
		$mail = new Mail;
		$mail->subject = '...';
		$mail->message = '...';

		foreach ($recipients as $recipient) {
			$this->mailer->send($mail, $recipient);
		}
		$this->logger->log('...');
	}
}

class SendMailMailer implements Mailer
{
	public function send(Mail $mail, string $to): void
	{
		mail($to, $mail->subject, $mail->message);
	}
}

class FileLogger implements Logger
{
	private string $file;

	public function __construct(string $file)
	{
		$this->file = $file;
	}

	public function log(string $message): void
	{
		file_put_contents($this->file, $message . "\n", FILE_APPEND);
	}
}

class Container
{
	private ?Logger $logger;
	private ?Mailer $mailer;

	public function getLogger(): Logger
	{
		if (!isset($this->logger)) {
			$this->logger = new FileLogger('log.txt');
		}
		return $this->logger;
	}

	public function getMailer(): Mailer
	{
		if (!isset($this->mailer)) {
			$this->mailer = new SendMailMailer;
		}
		return $this->mailer;
	}

	public function createNewsletterManager(): NewsletterManager
	{
		return new NewsletterManager($this->getMailer(), $this->getLogger());
	}
}

$container = new Container;
$manager = $container->createNewsletterManager();
$manager->distribute(...);

$loader = new Nette\DI\ContainerLoader(__DIR__ . '/temp');
$class = $loader->load(function($compiler) {
    $compiler->loadConfig(__DIR__ . '/config.neon');
});
$container = new $class;

$manager = $container->getByType(NewsletterManager::class);
$manager->distribute(['[email protected]', ...]);

$loader = new Nette\DI\ContainerLoader(__DIR__ . '/temp', autoRebuild: true);

class NewsletterManager
{
	private AnotherService $anotherService;

	public function setAnotherService(AnotherService $service): void
	{
		$this->anotherService = $service;
	}

...

use Nette\DI\Attributes\Inject;

class FooClass
{
	private Service1 $service1;

	// 1) inject* method:

	public function injectService1(Service1 $service): void
	{
		$this->service1 = $service1;
	}

	// 2) Assign to the variable with the #[Inject] attribute:

	#[Inject]
	public Service2 $service2;
}

interface BarFactory
{
	function create(): Bar;
}

class Bar
{
	private Logger $logger;

	public function __construct(Logger $logger)
	{
		$this->logger = $logger;
	}
}

class Foo
{
	private BarFactory $barFactory;

	function __construct(BarFactory $barFactory)
	{
		$this->barFactory = $barFactory;
	}

	function bar(): void
	{
		$bar = $this->barFactory->create();
	}
}