catshop_hotel.module

<?php

/**
 * @file
 * Defines the Product entity and associated features.
 */

use Drupal\entity\BundleFieldDefinition;
use Drupal\catshop_hotel\Entity\HotelType;

/**
 * Adds the default body field to a hotel type.
 *
 * @param \Drupal\catshop_hotel\Entity\HotelType $hotel_type
 *   The hotel type.
 * @param string $label
 *   (optional) The label for the body instance. Defaults to 'Body'.
 */
function catshop_hotel_add_body_field(HotelType $hotel_type, $label = 'Body') {
  $field_definition = BundleFieldDefinition::create('text_with_summary')
    ->setTargetEntityTypeId('catshop_hotel')
    ->setTargetBundle($hotel_type->id())
    ->setName('body')
    ->setLabel($label)
    ->setSetting('display_summary', FALSE)
    ->setDisplayOptions('form', [
      'type' => 'text_textarea_with_summary',
      'weight' => 1,
    ])
    ->setDisplayOptions('view', [
      'label' => 'hidden',
      'type' => 'text_default',
    ]);

  $configurable_field_manager = \Drupal::service('commerce.configurable_field_manager');
  $configurable_field_manager->createField($field_definition, FALSE);
}

/**
 * Adds the default variations field to a hotel type.
 *
 * Variations can't be a base field because the Views integration is broken.
 * Instead, it is created as a configurable field for each hotel type.
 *
 * @param \Drupal\catshop_hotel\Entity\HotelType $hotel_type
 *   The hotel type.
 */
function catshop_hotel_add_rooms_field(HotelType $hotel_type) {
  $field_definition = BundleFieldDefinition::create('entity_reference')
    ->setTargetEntityTypeId('catshop_hotel')
    ->setTargetBundle($hotel_type->id())
    ->setName('rooms')
    ->setLabel('Rooms')
    ->setCardinality(BundleFieldDefinition::CARDINALITY_UNLIMITED)
    ->setRequired(TRUE)
    ->setSetting('target_type', 'catshop_hotel_room')
    ->setSetting('handler', 'default')
    ->setDisplayOptions('form', [
      'type' => 'inline_entity_form_complex',
      'weight' => 10,
      'settings' => [
        'override_labels' => TRUE,
        'label_singular' => 'room',
        'label_plural' => 'rooms',
      ],
    ]);

  $configurable_field_manager = \Drupal::service('commerce.configurable_field_manager');
  $configurable_field_manager->createField($field_definition);
}