Yiisoft\Yii\Web\Middleware\Callback

Complexity

Total Complexity

2

Size/Duplication

Total Lines	17
Duplicated Lines	0 %

Test Coverage

Coverage

100%

Importance

Changes	1
Bugs	0	Features	0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	process()	0	3	1
A	__construct()	0	4	1

<?php
namespace Yiisoft\Yii\Web\Middleware;

use Psr\Container\ContainerInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Server\MiddlewareInterface;
use Psr\Http\Server\RequestHandlerInterface;
use Yiisoft\Injector\Injector;

/**
 * Callback wraps arbitrary PHP callback into object matching [[MiddlewareInterface]].
 * Usage example:
 *
 * ```php
 * $middleware = new CallbackMiddleware(function(ServerRequestInterface $request, RequestHandlerInterface $handler) {
 *     if ($request->getParams() === []) {
 *         return new Response();
 *     }
 *     return $handler->handle($request);
 * });
 * $response = $middleware->process(Yii::$app->getRequest(), $handler);
 * ```
 *
 * @see MiddlewareInterface
 */
final class Callback implements MiddlewareInterface
{
    /**
     * @var callable a PHP callback matching signature of [[MiddlewareInterface::process()]].
     */
    private $callback;
    private $container;

    public function __construct(callable $callback, ContainerInterface $container)
    {
        $this->callback = $callback;
        $this->container = $container;
    }

    public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
    {
        return (new Injector($this->container))->invoke($this->callback, [$request, $handler]);
    }
}