Drupal 8 restresource：找不到路线

Question

我正在尝试创建一个休息端点。我这样做的方法是首先使用 drupal generate:module 创建一个模块，然后添加其余依赖项，然后使用 drupal generate:plugin:rest:resource 创建一个 restresource。这一切工作正常，我创建的端点甚至显示在模块 restui 中，路径如下：/api/v1/articles。问题是当我转到我创建的端点时出现以下错误：

{ 
  "message": "No route found for \"GET /api/v1/articles\""
}

缓存重建无法解决我的问题，当我查看路由 table 时，确实没有为 /api/v1/articles 添加路由。有什么我忘记做的事吗？

这是生成的休息资源：

namespace Drupal\api_articles\Plugin\rest\resource;

use Drupal\Core\Session\AccountProxyInterface;
use Drupal\rest\Plugin\ResourceBase;
use Drupal\rest\ResourceResponse;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
use Psr\Log\LoggerInterface;

/**
 * Provides a resource to get view modes by entity and bundle.
 *
 * @RestResource(
 *   id = "article_rest_resource",
 *   label = @Translation("Article rest resource"),
 *   uri_paths = {
 *     "canonical" = "/api/v1/articles",
 *     "https://www.drupal.org/link-relations/create" = "/api/v1/articles"
 *   }
 * )
 */
class ArticleRestResource extends ResourceBase {

  /**
   * A current user instance.
   *
   * @var \Drupal\Core\Session\AccountProxyInterface
   */
  protected $currentUser;

  /**
   * Constructs a Drupal\rest\Plugin\ResourceBase object.
   *
   * @param array $configuration
   *   A configuration array containing information about the plugin instance.
   * @param string $plugin_id
   *   The plugin_id for the plugin instance.
   * @param mixed $plugin_definition
   *   The plugin implementation definition.
   * @param array $serializer_formats
   *   The available serialization formats.
   * @param \Psr\Log\LoggerInterface $logger
   *   A logger instance.
   * @param \Drupal\Core\Session\AccountProxyInterface $current_user
   *   A current user instance.
   */
  public function __construct(
    array $configuration,
    $plugin_id,
    $plugin_definition,
    array $serializer_formats,
    LoggerInterface $logger,
    AccountProxyInterface $current_user) {
    parent::__construct($configuration, $plugin_id, $plugin_definition, $serializer_formats, $logger);

    $this->currentUser = $current_user;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
    return new static(
      $configuration,
      $plugin_id,
      $plugin_definition,
      $container->getParameter('serializer.formats'),
      $container->get('logger.factory')->get('api_articles'),
      $container->get('current_user')
    );
  }

  /**
   * Responds to GET requests.
   *
   * Returns a list of bundles for specified entity.
   *
   * @throws \Symfony\Component\HttpKernel\Exception\HttpException
   *   Throws exception expected.
   */
  public function get() {

    // You must to implement the logic of your REST Resource here.
    // Use current user after pass authentication to validate access.
    if (!$this->currentUser->hasPermission('access content')) {
      throw new AccessDeniedHttpException();
    }

    return new ResourceResponse("Implement REST State GET!");
  }

}

Answer 1

所以问题出在从 8.1.9 升级到 8.2.0 时。这破坏了我用来分配端点的 RestUI 模块。

Answer 2

问题是 restui 不会为您的资源创建配置文件，如果您只想使用稳定版本 (8.x-1.12)，您可以自己创建它。 restui 的开发版本已经修复了这个问题。

Link: https://www.drupal.org/node/2816433

Answer 3

根据REST and Application Integration：

The content type for the data you send, or the accept type for the data you are receiving, must be set to 'application/hal+json'.

所以需要进行以下步骤：

启用 HAL 模块。
在资源配置中，在 Accepted request formats 下启用 hal_json.
[I]nform Drupal about the serialization format you are using。因此，要么使用 hal+json（例如 POST）发送 Content-Type header，要么将 ?_format=hal+json 添加到 URL（例如 GET）。

这也可能是由于 @RestResource 注释中缺少这一行造成的，但您已经有了它：

"https://www.drupal.org/link-relations/create" = "/api/v1/articles"

Drupal 8 restresource：找不到路线

Drupal 8 restresource: No route found

rest

drupal

drupal-8