I'm trying to follow the example of a custom rest api in https://www.drupal.org/docs/8/api/restful-web-services-api/custom-rest-resources.

I don't understand how I can access the request for get or post. In the example there is only a default response, but I would of course like to make it depending on the request headers and body.

2 Answers 2


The only classes that extend ResourceBase implemented by Drupal core don't check/use what passed in the request. So I could not use Drupal core code as example.

If you really need to access any request value, and the argument passed to the get() or post() methods is not enough/adequate for your purpose, you can inject the request object in the create() static method.

  public function __construct(array $configuration, $plugin_id, $plugin_definition, array $serializer_formats, LoggerInterface $logger, Request $request) {
    parent:: __construct($configuration, $plugin_id, $plugin_definition,  $serializer_formats, $logger);
    $this->request = $request;

   * {@inheritdoc}
  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
    return new static(

In the class methods you then use $this->request to access the request object.


You can always get the current request through Drupal::request():

$request = \Drupal::request();
  • Should this be injected?
    – Kevin
    Apr 23, 2017 at 16:16
  • Depends on context @Kevin, but yeah the request_stack service can be injected to accomplish the same thing
    – Clive
    Apr 23, 2017 at 16:34

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