Twig GlobalsInterface中斷了Symfony調試工具欄

Question

Symfony 4.3.1

我有一個Twig-Extension，在其中向Twig全局添加變量。 一旦在類中實現了Twig\\Extension\\GlobalsInterface ，Symfony調試工具欄就會呈現“加載Web調試工具欄時發生錯誤”。 變量可以完美地添加到全局范圍中。

這是我的擴展名：

<?php

namespace App\Twig;

use Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface;
use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
use Doctrine\ORM\EntityManagerInterface;
use Twig\Extension\AbstractExtension;
use Twig\Extension\GlobalsInterface;

class GlobalVarsExtension extends AbstractExtension implements GlobalsInterface
{
    protected $em;

    protected $tokenStorage;

    protected $authorizationChecker;

    public function __construct(EntityManagerInterface $em, AuthorizationCheckerInterface $authorizationChecker, TokenStorageInterface $tokenStorage)
    {
        $this->em = $em;
        $this->tokenStorage = $tokenStorage;
        $this->authorizationChecker = $authorizationChecker;
    }


    public function getGlobals()
    {
        $globalVars = [];

        if ($this->authorizationChecker->isGranted('IS_AUTHENTICATED_FULLY')) {
            if (null !== $token = $this->tokenStorage->getToken()) {
                $globalVars['user'] = $token->getUser();
            }
        }

        return $globalVars;
    }
}

這是我實現的接口：

<?php

/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Twig\Extension;

/**
 * Enables usage of the deprecated Twig\Extension\AbstractExtension::getGlobals() method.
 *
 * Explicitly implement this interface if you really need to implement the
 * deprecated getGlobals() method in your extensions.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
interface GlobalsInterface
{
    /**
     * Returns a list of global variables to add to the existing list.
     *
     * @return array An array of global variables
     */
    public function getGlobals();
}

class_alias('Twig\Extension\GlobalsInterface', 'Twig_Extension_GlobalsInterface');

我按照他們的文檔添加了全局變量： https : //twig.symfony.com/doc/2.x/advanced.html#id1

這是來自Twig的變更日志，其中指出該方法已棄用： https : //twig.symfony.com/doc/1.x/deprecated.html#extensions

我想念什么？ 還是有其他方法添加全局變量？

編輯：

在意識到我完全錯過了symfony錯誤日志之后，錯誤以完全不同的原因出現了……

錯誤日志：

[2019-06-13 15:49:18] request.CRITICAL: Uncaught PHP Exception Symfony\Component\Security\Core\Exception\AuthenticationCredentialsNotFoundException: "The token storage contains no authentication token. One possible reason may be that there is no firewall configured for this URL." at /var/www/rekkt.de/vendor/symfony/security-core/Authorization/AuthorizationChecker.php line 49 {"exception":"[object] (Symfony\\Component\\Security\\Core\\Exception\\AuthenticationCredentialsNotFoundException(code: 0): The token storage contains no authentication token. One possible reason may be that there is no firewall configured for this URL. at /var/www/rekkt.de/vendor/symfony/security-core/Authorization/AuthorizationChecker.php:49)"} []
[2019-06-13 15:49:18] request.CRITICAL: Exception thrown when handling an exception (Symfony\Component\Security\Core\Exception\AuthenticationCredentialsNotFoundException: The token storage contains no authentication token. One possible reason may be that there is no firewall configured for this URL. at /var/www/rekkt.de/vendor/symfony/security-core/Authorization/AuthorizationChecker.php line 49) {"exception":"[object] (Symfony\\Component\\Security\\Core\\Exception\\AuthenticationCredentialsNotFoundException(code: 0): The token storage contains no authentication token. One possible reason may be that there is no firewall configured for this URL. at /var/www/rekkt.de/vendor/symfony/security-core/Authorization/AuthorizationChecker.php:49)"} []
[2019-06-13 15:49:18] php.CRITICAL: Uncaught Exception: The token storage contains no authentication token. One possible reason may be that there is no firewall configured for this URL. {"exception":"[object] (Symfony\\Component\\Security\\Core\\Exception\\AuthenticationCredentialsNotFoundException(code: 0): The token storage contains no authentication token. One possible reason may be that there is no firewall configured for this URL. at /var/www/rekkt.de/vendor/symfony/security-core/Authorization/AuthorizationChecker.php:49, Symfony\\Component\\Security\\Core\\Exception\\AuthenticationCredentialsNotFoundException(code: 0): The token storage contains no authentication token. One possible reason may be that there is no firewall configured for this URL. at /var/www/rekkt.de/vendor/symfony/security-core/Authorization/AuthorizationChecker.php:49)"} []
[2019-06-13 15:49:18] request.CRITICAL: Uncaught PHP Exception Symfony\Component\Security\Core\Exception\AuthenticationCredentialsNotFoundException: "The token storage contains no authentication token. One possible reason may be that there is no firewall configured for this URL." at /var/www/rekkt.de/vendor/symfony/security-core/Authorization/AuthorizationChecker.php line 49 {"exception":"[object] (Symfony\\Component\\Security\\Core\\Exception\\AuthenticationCredentialsNotFoundException(code: 0): The token storage contains no authentication token. One possible reason may be that there is no firewall configured for this URL. at /var/www/rekkt.de/vendor/symfony/security-core/Authorization/AuthorizationChecker.php:49, Symfony\\Component\\Security\\Core\\Exception\\AuthenticationCredentialsNotFoundException(code: 0): The token storage contains no authentication token. One possible reason may be that there is no firewall configured for this URL. at /var/www/rekkt.de/vendor/symfony/security-core/Authorization/AuthorizationChecker.php:49)"} []
[2019-06-13 15:49:18] request.CRITICAL: Exception thrown when handling an exception (Symfony\Component\Security\Core\Exception\AuthenticationCredentialsNotFoundException: The token storage contains no authentication token. One possible reason may be that there is no firewall configured for this URL. at /var/www/rekkt.de/vendor/symfony/security-core/Authorization/AuthorizationChecker.php line 49) {"exception":"[object] (Symfony\\Component\\Security\\Core\\Exception\\AuthenticationCredentialsNotFoundException(code: 0): The token storage contains no authentication token. One possible reason may be that there is no firewall configured for this URL. at /var/www/rekkt.de/vendor/symfony/security-core/Authorization/AuthorizationChecker.php:49)"} []

EDIT2：

因此，根據給定的錯誤日志，這就是我所做的更改，並且現在工作良好。

public function getGlobals()
    {
        $globalVars = [];

        if (null !== $token = $this->tokenStorage->getToken()) {
            $globalVars['user'] = $token->getUser();
        }

        return $globalVars;
    }

Answer 1

首先，您不應將整個容器注入擴展程序中。

始終嘗試僅注入所需的東西。 在您的示例中，您可以直接注入AuthorizationCheckerInterface而不是ContainerInterface 。

關於您的錯誤，如果沒有日志，猜測起來有些麻煩，但是您應該嘗試在調用getUser()之前檢查getToken()方法是否未返回null 。

<?php

namespace App\Twig;

use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
use Doctrine\ORM\EntityManagerInterface;
use Twig\Extension\AbstractExtension;
use Twig\Extension\GlobalsInterface;
use Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface;


class GlobalVarsExtension extends AbstractExtension implements GlobalsInterface
{
    protected $em;

    protected $tokenStorage;

    protected $authorizationChecker;

    public function __construct(EntityManagerInterface $em, AuthorizationCheckerInterface $authorizationChecker, TokenStorageInterface $tokenStorage)
    {
        $this->em = $em;
        $this->tokenStorage = $tokenStorage;
        $this->authorizationChecker = $authorizationChecker;
    }


   public function getGlobals()
   {
    $globalVars = [];

    if ($this->authorizationChecker->isGranted('IS_AUTHENTICATED_FULLY')) {
        if (null !== $token = $this->tokenStorage->getToken()) {
            $globalVars['user'] = $token->getUser();
        }
    }

    return $globalVars;
   }
}