EntityTestComputedBundleField.php

<?php

namespace Drupal\entity_test\Entity;

use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Field\BaseFieldDefinition;
use Drupal\Core\Field\FieldDefinition;
use Drupal\Core\StringTranslation\TranslatableMarkup;
use Drupal\entity_test\FieldStorageDefinition;
use Drupal\entity_test\Plugin\Field\ComputedReferenceTestFieldItemList;
use Drupal\entity_test\Plugin\Field\ComputedTestBundleFieldItemList;
use Drupal\entity_test\Plugin\Field\ComputedTestCacheableStringItemList;
use Drupal\entity_test\Plugin\Field\ComputedTestFieldItemList;

/**
 * An entity used for testing computed bundle field values.
 *
 * @ContentEntityType(
 *   id = "entity_test_comp_bund_fld",
 *   label = @Translation("Entity Test computed bundle field"),
 *   base_table = "entity_test_comp_bund_fld",
 *   handlers = {
 *     "views_data" = "Drupal\entity_test\EntityTestViewsData"
 *   },
 *   entity_keys = {
 *     "id" = "id",
 *     "uuid" = "uuid",
 *     "label" = "name",
 *     "bundle" = "type",
 *   },
 *   admin_permission = "administer entity_test content",
 * )
 */
class EntityTestComputedBundleField extends EntityTest {
    
    /**
     * {@inheritdoc}
     */
    public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
        $fields = parent::baseFieldDefinitions($entity_type);
        $fields['computed_string_field'] = BaseFieldDefinition::create('string')->setLabel('Computed Field Test')
            ->setComputed(TRUE)
            ->setClass(ComputedTestFieldItemList::class);
        $fields['computed_reference_field'] = BaseFieldDefinition::create('entity_reference')->setLabel('Computed Reference Field Test')
            ->setComputed(TRUE)
            ->setSetting('target_type', 'entity_test')
            ->setClass(ComputedReferenceTestFieldItemList::class);
        $fields['computed_test_cacheable_string_field'] = BaseFieldDefinition::create('computed_test_cacheable_string_item')->setLabel(new TranslatableMarkup('Computed Cacheable String Field Test'))
            ->setComputed(TRUE)
            ->setClass(ComputedTestCacheableStringItemList::class)
            ->setReadOnly(FALSE)
            ->setInternal(FALSE);
        return $fields;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function bundleFieldDefinitions(EntityTypeInterface $entity_type, $bundle, array $base_field_definitions) {
        $fields = parent::bundleFieldDefinitions($entity_type, $bundle, $base_field_definitions);
        $computed_field_bundles = [
            'entity_test_comp_bund_fld_bund',
            'entity_test_comp_bund_fld_bund_2',
        ];
        if (in_array($bundle, $computed_field_bundles, TRUE)) {
            // @todo Use the proper FieldStorageDefinition class instead
            // https://www.drupal.org/node/2280639.
            $storageDefinition = FieldStorageDefinition::create('string')->setName('computed_bundle_field')
                ->setTargetEntityTypeId($entity_type->id())
                ->setComputed(TRUE)
                ->setClass(ComputedTestBundleFieldItemList::class);
            $fields['computed_bundle_field'] = FieldDefinition::createFromFieldStorageDefinition($storageDefinition)->setLabel(t('A computed Bundle Field Test'))
                ->setComputed(TRUE)
                ->setClass(ComputedTestBundleFieldItemList::class);
        }
        return $fields;
    }

}