Php “未知”；表格“小部件”；功能

我用Silex创建了一个应用程序

下面是web/index.php

use Symfony\Component\Debug\Debug;
use Symfony\Component\HttpFoundation\Request;
use Application\MainKernel;

require_once __DIR__.'/../vendor/autoload.php';

Debug::enable(E_ALL & ~E_NOTICE);

$request = Request::createFromGlobals();
$kernel = new MainKernel(require_once __DIR__.'/../bootstrap.php');

$response = $kernel->handle($request);
$response->prepare($request);
$response->send();

bootstrap.php

use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Dumper\PhpDumper;
use Symfony\Component\DependencyInjection\Loader\YamlFileLoader;
use Symfony\Component\Config\FileLocator;

$configDir = __DIR__ . '/config';
$cacheDir = __DIR__ . '/cache';

$class = 'ApplicationContainer';
$path = sprintf($cacheDir.'%s.php', $class);

if (!file_exists($path)) {
    $container = new ContainerBuilder();
    $container->setParameter('kernel.cache_dir', realpath($cacheDir));
    $container->setParameter('kernel.config_dir', realpath($configDir));
    $container->setParameter('kernel.views_dir', realpath(__DIR__.'views'));

    $loader = new YamlFileLoader($container, new FileLocator(realpath($configDir)));
    $loader->load('services.yml');

    /* Recherche de l'user */
    $user = "";
    if (preg_match('@^/~([^/]+)/.*$@', $_SERVER['REQUEST_URI'], $m)) {
        $user = $m[1];
    }

    $container->setParameter('domain', 'digitick.local');
    $container->setParameter('user', $user);
    $container->compile();

    $dumper = new PhpDumper($container);
    file_put_contents($path, $dumper->dump(['class' => $class]));
}

require_once $path;

$container = new $class();

return $container;

类MainKernel返回响应：

/**
 * Creation Response Object
 * @param   Request     $request
 * @param   int         $type
 * @param   bool        $catch
 * @return  Response
 */
public function handle(Request $request, $type = self::MASTER_REQUEST, $catch = true)
{
    if($this->container->has('request_context')) {
        $context = $this->container->get('request_context');
        $context->fromRequest($request);
    }

    try {
        $request->attributes->add($this->container->get('router')->match($request->getPathInfo()));
        $response = $this->executeController($request);
    } catch (ResourceNotFoundException $e) {
        $response = new Response('Page Not Found', Response::HTTP_NOT_FOUND);
    } catch (MethodNotAllowedException $e) {
        $response = new Response('Method Not Allowed', Response::HTTP_METHOD_NOT_ALLOWED);
    } catch (HttpException $e) {
        $code = $e->getStatusCode();
        $response = new Response(Response::$statusTexts[$code], $code);
    } catch (\Exception $e) {
        var_dump($e->getMessage());
        $response = new Response('Internal Server Error', Response::HTTP_INTERNAL_SERVER_ERROR);
    }

    return $response;
}

private function executeController(Request $request)
{
    if(!$request->attributes->has('_controller')) {
        throw new \RuntimeException('No controller found to execute');
    }

    $class = $request->get('_controller');
    if (!class_exists($class)) {
        throw new \RuntimeException(sprintf('Controller class "%s" does not exist or is not autoladable.', $class));
    }

    if(!method_exists($class, '__invoke')) {
        throw new \RuntimeException(sprintf('Controller class "%s" must have __invoke() method.', $class));
    }

    $controller = new $class();
    if($controller instanceof AbstractAction) {
        $controller->setContainer($this->container);
    }

    $response = call_user_func_array($controller, [$request]);
    if(!$response instanceof Response) {
        throw new \RuntimeException(sprintf('Controller class "%s" must return a Response object.', $class));
    }

    return $response;
}

我在composer上得到了细枝和细枝的扩展。不幸的是，当我将表单_widget（）放在我的小树枝文件中时，它说：

第30行“index.html.twig”中未知的“form_widget”函数

我错过了什么

---

谢谢

表单小部件功能由提供，在引导过程中由注册。也许您只是忘记在应用程序中注册FormServiceProvider：

use Silex\Provider\FormServiceProvider;

$app->register(new FormServiceProvider());

我错过了什么

我相信您忽略了一个事实，即您没有使用Silex，而是使用自举的Symfony组件，这些组件与Povertier的博客文章非常相似（如果不是相同的话）

您可以通过删除粘贴在此处的大部分内容来重构代码，因为这些内容已经是Silex的一部分，然后按照@marc的建议注册表单服务提供商，以及Twig服务提供商（您说您已经通过composer添加了）。基本上，您在Silex中的代码可以归结为：

require_once __DIR__.'/../vendor/autoload.php';

$app = new Silex\Application();

$app->get('/', function () use ($app) {
    return 'works';
});

$app->run();

---

请仔细阅读Silex以便更好地掌握它。

谢谢，我试过：$container->register（new\Silex\Provider\FormServiceProvider（））$容器->编译（）；但它告诉我们：“警告：strtolower（）希望参数1是字符串，对象是给定的”：（…我的代码中没有$app:（！