Slim 使用一個可選的依存項容器來準備、管理和注入應用程式的依存項。Slim 支援實作PSR-11的容器，例如 PHP-DI。
您不必提供依存項容器。但是，如果您有提供，則在建立 App 之前，您必須提供一個容器實例給 AppFactory。
<?php
use DI\Container;
use Psr\Http\Message\ResponseInterface as Response;
use Psr\Http\Message\ServerRequestInterface as Request;
use Slim\Factory\AppFactory;
require __DIR__ . '/../vendor/autoload.php';
// Create Container using PHP-DI
$container = new Container();
// Set container to create App with on AppFactory
AppFactory::setContainer($container);
$app = AppFactory::create();
將服務新增至您的容器
$container->set('myService', function () {
$settings = [...];
return new MyService($settings);
});
您可以明確的從您的容器中擷取服務，也可以像這樣從 Slim 應用程式路徑中擷取
/**
* Example GET route
*
* @param ServerRequestInterface $request PSR-7 request
* @param ResponseInterface $response PSR-7 response
* @param array $args Route parameters
*
* @return ResponseInterface
*/
$app->get('/foo', function (Request $request, Response $response, $args) {
$myService = $this->get('myService');
// ...do something with $myService...
return $response;
});
要在使用服務之前測試服務是否在容器中，請使用 has() 方法，就像這樣
/**
* Example GET route
*
* @param ServerRequestInterface $request PSR-7 request
* @param ResponseInterface $response PSR-7 response
* @param array $args Route parameters
*
* @return ResponseInterface
*/
$app->get('/foo', function (Request $request, Response $response, $args) {
if ($this->has('myService')) {
$myService = $this->get('myService');
}
return $response;
});
如果您想要建立已經在您的容器中定義依存項的 App，您可以使用 AppFactory::createFromContainer() 方法。
範例
<?php
use App\Factory\MyResponseFactory;
use DI\Container;
use Psr\Container\ContainerInterface;
use Psr\Http\Message\ResponseFactoryInterface;
use Slim\Factory\AppFactory;
require_once __DIR__ . '/../vendor/autoload.php';
// Create Container using PHP-DI
$container = new Container();
// Add custom response factory
$container->set(ResponseFactoryInterface::class, function (ContainerInterface $container) {
return new MyResponseFactory(...);
});
// Configure the application via container
$app = AppFactory::createFromContainer($container);
// ...
$app->run();
受支援的 App 依存項為