Last updated June 15, 2020
Module Development8.9.x/9.0.x

Drupal's field system provides us with a flexible system of adding different types of discrete data to content types. This enables us to create rich content models. The Field API allows us to define these distinct field types by creating a new plugin. These plugins specify a FieldType annotation. In this tutorial, we'll look at these annotations in detail. We'll look at the implementations of field types from Drupal core. Also, we'll see what a new custom field type would look like.

By the end of this tutorial, you should be able to:

  • Understand how field type definitions are created and exposed to Drupal
  • Identify the various field types provided by Drupal core
  • Understand the requirements for providing a specification for a new field type