Actualización

vendor/symfony/security-bundle/Templating/Helper/LogoutUrlHelper.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bundle\SecurityBundle\Templating\Helper;
+
+use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
+use Symfony\Component\Security\Http\Logout\LogoutUrlGenerator;
+use Symfony\Component\Templating\Helper\Helper;
+
+/**
+ * LogoutUrlHelper provides generator functions for the logout URL.
+ *
+ * @author Jeremy Mikola <jmikola@gmail.com>
+ */
+class LogoutUrlHelper extends Helper
+{
+    private $generator;
+
+    /**
+     * Constructor.
+     *
+     * @param LogoutUrlGenerator $generator A LogoutUrlGenerator instance
+     */
+    public function __construct(LogoutUrlGenerator $generator)
+    {
+        $this->generator = $generator;
+    }
+
+    /**
+     * Generates the absolute logout path for the firewall.
+     *
+     * @param string|null $key The firewall key or null to use the current firewall key
+     *
+     * @return string The logout path
+     */
+    public function getLogoutPath($key)
+    {
+        return $this->generator->getLogoutPath($key, UrlGeneratorInterface::ABSOLUTE_PATH);
+    }
+
+    /**
+     * Generates the absolute logout URL for the firewall.
+     *
+     * @param string|null $key The firewall key or null to use the current firewall key
+     *
+     * @return string The logout URL
+     */
+    public function getLogoutUrl($key)
+    {
+        return $this->generator->getLogoutUrl($key, UrlGeneratorInterface::ABSOLUTE_URL);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getName()
+    {
+        return 'logout_url';
+    }
+}

vendor/symfony/security-bundle/Templating/Helper/SecurityHelper.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bundle\SecurityBundle\Templating\Helper;
+
+use Symfony\Component\Security\Acl\Voter\FieldVote;
+use Symfony\Component\Templating\Helper\Helper;
+use Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface;
+
+/**
+ * SecurityHelper provides read-only access to the security checker.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class SecurityHelper extends Helper
+{
+    private $securityChecker;
+
+    public function __construct(AuthorizationCheckerInterface $securityChecker = null)
+    {
+        $this->securityChecker = $securityChecker;
+    }
+
+    public function isGranted($role, $object = null, $field = null)
+    {
+        if (null === $this->securityChecker) {
+            return false;
+        }
+
+        if (null !== $field) {
+            $object = new FieldVote($object, $field);
+        }
+
+        return $this->securityChecker->isGranted($role, $object);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getName()
+    {
+        return 'security';
+    }
+}