ViewsData.php

<?php

namespace Drupal\content_moderation;

use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Entity\EntityTypeManagerInterface;
use Drupal\Core\StringTranslation\StringTranslationTrait;

/**
 * Provides the content_moderation views integration.
 *
 * @internal
 */
class ViewsData {
    use StringTranslationTrait;
    
    /**
     * The entity type manager.
     *
     * @var \Drupal\Core\Entity\EntityTypeManagerInterface
     */
    protected $entityTypeManager;
    
    /**
     * The moderation information.
     *
     * @var \Drupal\content_moderation\ModerationInformationInterface
     */
    protected $moderationInformation;
    
    /**
     * Creates a new ViewsData instance.
     *
     * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
     *   The entity type manager.
     * @param \Drupal\content_moderation\ModerationInformationInterface $moderation_information
     *   The moderation information.
     */
    public function __construct(EntityTypeManagerInterface $entity_type_manager, ModerationInformationInterface $moderation_information) {
        $this->entityTypeManager = $entity_type_manager;
        $this->moderationInformation = $moderation_information;
    }
    
    /**
     * Returns the views data.
     *
     * @return array
     *   The views data.
     */
    public function getViewsData() {
        $data = [];
        $entity_types_with_moderation = array_filter($this->entityTypeManager
            ->getDefinitions(), function (EntityTypeInterface $type) {
            return $this->moderationInformation
                ->isModeratedEntityType($type);
        });
        foreach ($entity_types_with_moderation as $entity_type) {
            $table = $entity_type->getDataTable() ?: $entity_type->getBaseTable();
            $data[$table]['moderation_state'] = [
                'title' => t('Moderation state'),
                'field' => [
                    'id' => 'moderation_state_field',
                    'default_formatter' => 'content_moderation_state',
                    'field_name' => 'moderation_state',
                ],
                'filter' => [
                    'id' => 'moderation_state_filter',
                    'allow empty' => TRUE,
                ],
                'sort' => [
                    'id' => 'moderation_state_sort',
                ],
            ];
            $revision_table = $entity_type->getRevisionDataTable() ?: $entity_type->getRevisionTable();
            $data[$revision_table]['moderation_state'] = [
                'title' => t('Moderation state'),
                'field' => [
                    'id' => 'moderation_state_field',
                    'default_formatter' => 'content_moderation_state',
                    'field_name' => 'moderation_state',
                ],
                'filter' => [
                    'id' => 'moderation_state_filter',
                    'allow empty' => TRUE,
                ],
                'sort' => [
                    'id' => 'moderation_state_sort',
                ],
            ];
        }
        return $data;
    }

}