1 <?php

     2 

     3 /*

     4  * This file is part of the Symfony package.

     5  *

     6  * (c) Fabien Potencier <fabien@symfony.com>

     7  *

     8  * For the full copyright and license information, please view the LICENSE

     9  * file that was distributed with this source code.

    10  */

    11 

    12 namespace Symfony\Bundle\SecurityBundle\Twig\Extension;

    13 

    14 use Symfony\Component\Security\Acl\Voter\FieldVote;

    15 use Symfony\Component\Security\Core\SecurityContextInterface;

    16 

    17 /**

    18  * SecurityExtension exposes security context features.

    19  *

    20  * @author Fabien Potencier <fabien@symfony.com>

    21  */

    22 class SecurityExtension extends \Twig_Extension

    23 {

    24     private $context;

    25 

    26     public function __construct(SecurityContextInterface $context = null)

    27     {

    28         $this->context = $context;

    29     }

    30 

    31     public function isGranted($role, $object = null, $field = null)

    32     {

    33         if (null === $this->context) {

    34             return false;

    35         }

    36 

    37         if (null !== $field) {

    38             $object = new FieldVote($object, $field);

    39         }

    40 

    41         return $this->context->isGranted($role, $object);

    42     }

    43 

    44     /**

    45      * {@inheritdoc}

    46      */

    47     public function getFunctions()

    48     {

    49         return array(

    50             'is_granted' => new \Twig_Function_Method($this, 'isGranted'),

    51         );

    52     }

    53 

    54     /**

    55      * Returns the name of the extension.

    56      *

    57      * @return string The extension name

    58      */

    59     public function getName()

    60     {

    61         return 'security';

    62     }

    63 }