field_example.module

<?php

/**
 * @file
 * An example field using the Field Types API.
 */

/**
 * @defgroup field_example Example: Field Types API
 * @ingroup examples
 * @{
 * Examples using Field Types API.
 *
 * Providing a field requires:
 * - Defining an entity field item. Entity field items are typed data objects
 *   containing the field values.
 *   - Drupal\field_example\Plugin\Field\FieldType\RgbItem
 * - Defining a field type schema at config/schema/[module_name].schema.yml
 *   - config/schema/field_example.schema.yml
 * - One or more widgets specifying how the field appears in edit forms
 *   - Drupal\field_example\Plugin\Field\TextWidget
 *   - Drupal\field_example\Plugin\Field\Text3Widget
 *   - Drupal\field_example\Plugin\Field\ColorPickerWidgetWidget
 * - One or more formatters specifying how the field appears in displayed
 *   entities
 *   - Drupal\field_example\Plugin\FieldFormatter\SimpleTextFormatter
 *   - Drupal\field_example\Plugin\FieldFormatter\ColorBackgroundFormatter
 *
 * @see field_types
 * @see field
 * @see schemaapi
 *
 * @} End of "defgroup field_example".
 */