EntityTestWithRevisionLog.php

<?php

namespace Drupal\entity_test_revlog\Entity;

use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Entity\RevisionableContentEntityBase;
use Drupal\Core\Field\BaseFieldDefinition;

/**
 * Defines the test entity class.
 *
 * @ContentEntityType(
 *   id = "entity_test_revlog",
 *   label = @Translation("Test entity - revisions log"),
 *   base_table = "entity_test_revlog",
 *   revision_table = "entity_test_revlog_revision",
 *   entity_keys = {
 *     "id" = "id",
 *     "uuid" = "uuid",
 *     "revision" = "revision_id",
 *     "bundle" = "type",
 *     "label" = "name",
 *     "langcode" = "langcode",
 *   },
 *   revision_metadata_keys = {
 *     "revision_user" = "revision_user",
 *     "revision_created" = "revision_created",
 *     "revision_log_message" = "revision_log_message"
 *   },
 * )
 */
class EntityTestWithRevisionLog extends RevisionableContentEntityBase {
    
    /**
     * {@inheritdoc}
     */
    public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
        $fields = parent::baseFieldDefinitions($entity_type);
        $fields['name'] = BaseFieldDefinition::create('string')->setLabel(t('Name'))
            ->setDescription(t('The name of the test entity.'))
            ->setTranslatable(TRUE)
            ->setRevisionable(TRUE)
            ->setSetting('max_length', 32)
            ->setDisplayOptions('view', [
            'label' => 'hidden',
            'type' => 'string',
            'weight' => -5,
        ])
            ->setDisplayOptions('form', [
            'type' => 'string_textfield',
            'weight' => -5,
        ]);
        return $fields;
    }

}