TestController.php

<?php

namespace Drupal\token_test\Controller;

use Drupal\Core\Controller\ControllerBase;
use Drupal\Core\Render\BubbleableMetadata;
use Drupal\Core\Utility\Token;
use Drupal\node\NodeInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Provides a test controller for token replacement.
 */
class TestController extends ControllerBase {
    
    /**
     * The token replacement system.
     *
     * @var \Drupal\Core\Utility\Token
     */
    protected $token;
    
    /**
     * Constructs a new TestController instance.
     *
     * @param \Drupal\Core\Utility\Token $token
     *   The token replacement system.
     */
    public function __construct(Token $token) {
        $this->token = $token;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container) {
        return new static($container->get('token'));
    }
    
    /**
     * Provides a token replacement with a node as well as the current user.
     *
     * This controller passes an explicit bubbleable metadata object to
     * $this->token->replace(), and applies the collected metadata to the render
     * array being built.
     *
     * @param \Drupal\node\NodeInterface $node
     *   The node.
     *
     * @return array
     *   The render array.
     */
    public function tokenReplace(NodeInterface $node) {
        $bubbleable_metadata = new BubbleableMetadata();
        $build['#markup'] = $this->token
            ->replace('Tokens: [node:nid] [current-user:uid]', [
            'node' => $node,
        ], [], $bubbleable_metadata);
        $bubbleable_metadata->applyTo($build);
        return $build;
    }
    
    /**
     * Provides a token replacement with a node as well as the current user.
     *
     * This controller is for testing the token service's fallback behavior of
     * applying collected metadata to the currently active render context when an
     * explicit bubbleable metadata object isn't passed in.
     *
     * @param \Drupal\node\NodeInterface $node
     *   The node.
     *
     * @return array
     *   The render array.
     */
    public function tokenReplaceWithoutPassedBubbleableMetadata(NodeInterface $node) {
        $build['#markup'] = $this->token
            ->replace('Tokens: [node:nid] [current-user:uid]', [
            'node' => $node,
        ], []);
        return $build;
    }

}