在 Slim v3 中间件中访问参数

Question

根据http://www.slimframework.com/docs/concepts/middleware.html，添加路由中间件如下

<?php
$app = new \Slim\App();

$mw = function ($request, $response, $next) {
    // How is $arg accessed?
    $response->getBody()->write('BEFORE');
    $response = $next($request, $response);
    $response->getBody()->write('AFTER');

    return $response;
};

$app->get('/ticket/{id}', function ($request, $response, $args) {
    $response->getBody()->write(' Hello ');
    // $arg will be ['id'=>123]
    return $response;
})->add($mw);

$app->run();

$arg 将是参数数组。如何在中间件中访问它？

http://help.slimframework.com/discussions/questions/31-how-pass-route-pram-to-middleware 显示了这样做的方法，但是，似乎是 Slim 的早期版本，并且错误 Fatal error: Call to undefined method Slim\Route::getParams().

Answer 1

路由参数可以通过请求的routeInfo属性访问，因此

$app->get('/hello/{name}', \HelloWorld::class . ':execute')
    ->add(function ($request, $response, $next) {
        var_dump($request->getAttribute('routeInfo')[2]['name']);exit();
        return $next($request, $response);
    });

这在 this Github issue

中有注明

在 Slim v3 中间件中访问参数

Accessing parameters in Slim v3 middleware

php

slim