In short, the REST module provides a customizable and extensible REST API exposing data that is managed by Drupal. Inspired by the REStful Web Services module in Drupal 7 (to be covered in a future installment), the REST module also depends on the Serialization module in Drupal 8 core. Finally, we'll discuss the helpful REST UI module as we expand our understanding of the fundamentals underpinning Drupal's web services. Today, we are diving into the REST module in Drupal 8 and the HAL specification and its corresponding module before embarking on setting up and configuring Drupal 8 as a web services provider with cross-origin resource sharing (CORS). In this Experience Express column, we're zeroing in on core REST because it is available off the shelf in any Drupal installation and doesn't require significant configuration to enable content exposure via REST API. Fortunately, Drupal's wider web services ecosystem, which I'll discuss next week, incorporates API optionality across a diverse range of specifications like JSON API, GraphQL, and CouchDB. For instance, the Hypertext Application Language (HAL) specification includes links to other resources, information that might be superfluous in a setting where payload size needs to be as minimal as possible. Nevertheless, in many cases, what is provided in Drupal core might not be the most suited to your needs. The REST module contains important logic that drives the availability of data through formatted responses. In Drupal's case, the REST module (also known as the RESTful Web Services module) in Drupal 8 core fulfills this responsibility. Perhaps the most critical piece of any decoupled CMS architecture is the API layer which exposes data in the back end for consumption by other applications. Your REST testing tool should return a header with "HTTP 200 No Error" and a body with all the new user account details in JSON format.Reprinted from the Acquia Developer Center with permission from DC Denison (Senior Editor, Acquia). Since we earlier gave anonymous users the permission to use this REST resource, no authentication is needed. The X-CSRF-Token value can be found at /rest/session/token. I used Cocoa Rest Client for Mac.Ĭontent-Type is application/hal+json. Chrome extensions include the ever-popular Postman and Restlet Client. Test your REST setup using one of many free tools. If the password is included in this case, the site will return a 422 Client Error with the message "A Password cannot be specified. If email verification is required, don't send the password in the POST request - just remove the entire line with "pass" in it, see below. If admin approval or email verification is required, the account will be created, but it will be blocked until approval/verification. Under the Account Settings config at /admin/config/people/accounts, allow registration by visitors, with or without administrative approval. If using the REST UI module, go to the UI page at /admin/config/services/rest and enable the User registration resource:Īt /admin/people/permissions, enable the permission: Access POST on User registration resource Alternatively, you can manually modify the file To set up your REST endpoints, install the Rest UI module. This post will get you set up for using the REST API, and in particular, will outline the steps to get a new user registered on a Drupal 8.3.x site.įirst, enable the 4 core Web Services modules: HAL, HTTP Basic Authentication, RESTful Web Services (REST), and Serialization. Getting a user registered using REST, however, seems to be in flux. There are many blog posts on using Drupal 8's REST API.
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