AccessCheck.php

<?php

namespace Drupal\menu_test\Access;

use Drupal\Core\Access\AccessResult;
use Drupal\Core\DependencyInjection\ContainerInjectionInterface;
use Drupal\Core\Routing\Access\AccessInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\HttpFoundation\RequestStack;

/**
 * Checks access based on the 'menu_test' key in session.
 */
class AccessCheck implements AccessInterface, ContainerInjectionInterface {
    
    /**
     * The request stack.
     *
     * @var \Symfony\Component\HttpFoundation\RequestStack
     */
    protected $requestStack;
    
    /**
     * Constructs a new AccessCheck class.
     *
     * @param \Symfony\Component\HttpFoundation\RequestStack $request_stack
     *   The request stack.
     */
    public function __construct(RequestStack $request_stack) {
        $this->requestStack = $request_stack;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container) {
        return new static($container->get('request_stack'));
    }
    
    /**
     * Check to see if user accessed this page.
     *
     * @return \Drupal\Core\Access\AccessResultInterface
     *   The access result.
     */
    public function access() {
        $result = AccessResult::allowedIf($this->requestStack
            ->getCurrentRequest()
            ->getSession()
            ->get('menu_test', 0) < 2);
        return $result->setCacheMaxAge(0);
    }
    
    /**
     * @return \Drupal\Core\Access\AccessResultForbidden
     */
    public function menuLocalAction7() {
        return AccessResult::forbidden()->addCacheTags([
            'menu_local_action7',
        ])
            ->addCacheContexts([
            'url.query_args:menu_local_action7',
        ]);
    }
    
    /**
     * @return \Drupal\Core\Access\AccessResultAllowed
     */
    public function menuLocalAction8() {
        return AccessResult::allowed()->addCacheTags([
            'menu_local_action8',
        ])
            ->addCacheContexts([
            'url.query_args:menu_local_action8',
        ]);
    }

}