如何使用超薄框架3实现flash消息

Question

我有一个问题，使用超薄/闪存/消息，做一个闪光消息。我有这个错误

Fatal error:
Uncaught DI\NotFoundException: No entry or class found for 'Slim\Flash' in C:\laragon\www\cart\vendor\php-di\php-di\src\DI\Container.php:119

Stack trace:
#0 C:\laragon\www\cart\app\container.php(52): DI\Container->get('Slim\\Flash')
#1 [internal function]: DI\Definition\Source\DefinitionFile->{closure}(Object(DI\Container)) #2 C:\laragon\www\cart\vendor\php-di\invoker\src\Invoker.php(82): call_user_func_array(Object(Closure), Array) 
#3 C:\laragon\www\cart\vendor\php-di\php-di\src\DI\Definition\Resolver\FactoryResolver.php(81): Invoker\Invoker->call(Object(Closure), Array)
#4 C:\laragon\www\cart\vendor\php-di\php-di\src\DI\Definition\Resolver\ResolverDispatcher.php(58): DI\Definition\Resolver\FactoryResolver->resolve(Object(DI\Definition\FactoryDefinition), Array) 
#5 C:\laragon\www\cart\vendor\php-di\php-di\src\DI\Container.php(285): DI\Definition\Resolver\ResolverDispatcher->resolve(Object(DI\Definition\FactoryDefinition), Array)
#6 C:\laragon\www\cart\vendor\php-di\php-di\src\DI\Container.php(122): DI\Contai in C:\laragon\www\cart\vendor\php-di\php-di\src\DI\Container.php on line 119

在引导程序/app.php中

$container->set('flash', function($container) { return new \Slim\Flash\Messages($container); });

在container.php中

Twig::class => function (ContainerInterface $c) {
    $twig = Factory::getEngine();

    $twig->addExtension(new TwigExtension(
            $c->get('router'),
            $c->get('request')->getUri()
    ));

    $twig->getEnvironment()->addGlobal('basket', $c->get(Basket::class));
    $twig->getEnvironment()->addGlobal('auth', $c->get(Auth::class));
    $twig->getEnvironment()->addGlobal('user', $c->get(Customer::class));

    $twig->getEnvironment()->addGlobal('flash', $c->get(Flash::class));         

    return $twig;   
},

Answer 1

$twig->getEnvironment()->addGlobal('flash', $c->get(Flash::class));意味着您要在容器中查找一个名为Slim\Flash的密钥，但您使用密钥flash注册了它。

因此，更改：

$twig->getEnvironment()->addGlobal('flash', $c->get(Flash::class));

至

$twig->getEnvironment()->addGlobal('flash', $c->get('flash'));

或者，您可以在任何地方使用完全限定的类名：

app.php：

use Slim\Flash\Messages as Flash;

$container->set(Flash::class, function($container) {
    return new Flash($container);
});

并将此代码添加到container.php的顶部：

use Slim\Flash\Messages as Flash;