Definition of a REST endpoint in Drupal 8

This article solves the following challenge: 

How to create a REST endpoint with Drupal 8?

There is not so much information about implementing a REST endpoint in Drupal 8 - you can find a lot of information about creating an endpoint for a GET Request but little information about the other HTTP request methods (POST/PUT/DELETE). Before implementing a REST endpoint there are some prerequisites. You have to install the following modules: REST UI, RESTful Web Services, Serialization and Entity. After installing them you are ready to go.
First of all you need an entity for which u create the endpoint (you can take an already existing one like Node or you can create a new one - a new one has to be created under the module path ‘src\Entity\.php’). With this entity you get some nice functions like storing, updating, deleting etc. . Now you can create your REST endpoint. The endpoint has to be created under the path ‘src\Plugin\rest\resource\’. The endpoint has to contain a header:
* Provides a resource to get view modes by entity and bundle.
* @RestResource(
* id = "",
* label = @Translation(""),
* serialization_class = "",
* uri_paths = {
* "canonical" = "/{id}",
* "https://www.drupal.org/link-relations/create" = ""
* }
* )
Now you just have to implement the following methods:
public function get($id){return Symfony\Component\HttpFoundation\Response}
public function put($id, $data){return Symfony\Component\HttpFoundation\Response}
public function post($node_type, $data){return Symfony\Component\HttpFoundation\Response}
public function delete($id){return Symfony\Component\HttpFoundation\Response}
The last thing is the definition of the access methods - this can be done under /admin/config/services/rest of your Drupal installation. You can find your request methods with the label you gave in the header.

Evaluate complexity of present statement:

Select ratingCancelGuessingPassing knowledgeKnowledgeableExpert

Your rating: 4 Average: 4 (2 votes)

How to distinguish a peer by its endpoint IPV4 Address at last Router/Switch in a P2P system

In Peer2Peer System using just IPV4 Endpoint Address, suppose that we have a peer in USA and two other peers in a same office at TUWien. As you know Layer2 Switches (Common Switches used in LAN) broadcast the message to the network and just because the last address that USA peer has is the router just before the switch, we can not distinguish between two local peers in a same office. So how should I distinguish them?
Subscribe to Endpoint