chill-bundles/Workflow/Event/DefaultTaskGuardEvent.php

<?php
/*
 * Copyright (C) 2018 Champs Libres Cooperative <info@champs-libres.coop>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
namespace Chill\TaskBundle\Workflow\Event;

use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\Workflow\Event\GuardEvent;
use Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface;
use Chill\TaskBundle\Security\Authorization\TaskVoter;

/**
 * 
 *
 * @author Julien Fastré <julien.fastre@champs-libres.coop>
 */
class DefaultTaskGuardEvent implements EventSubscriberInterface
{
    public static function getSubscribedEvents(): array
    {
        return [
            'workflow.task_default.guard' => [
                'checkACL'
            ]
        ];
    }
    
    /**
     *
     * @var AuthorizationCheckerInterface
     */
    protected $authorizationChecker;
    
    public function __construct(AuthorizationCheckerInterface $authorizationChecker)
    {
        $this->authorizationChecker = $authorizationChecker;
    }
    
    public function checkACL(GuardEvent $event)
    {
        if (FALSE === $this->authorizationChecker->isGranted(TaskVoter::UPDATE, 
            $event->getSubject())) {
            $event->setBlocked(true);
        }
    }
}