EntityPathAliasCreateDeriver.php

<?php

namespace Drupal\rules\Plugin\RulesAction;

use Drupal\Component\Plugin\Derivative\DeriverBase;
use Drupal\Core\Entity\ContentEntityTypeInterface;
use Drupal\Core\Entity\EntityTypeManagerInterface;
use Drupal\Core\Plugin\Discovery\ContainerDeriverInterface;
use Drupal\Core\StringTranslation\StringTranslationTrait;
use Drupal\Core\StringTranslation\TranslationInterface;
use Drupal\rules\Context\ContextDefinition;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Derives entity create plugin definitions based on content entity types.
 *
 * @see \Drupal\rules\Plugin\RulesAction\EntityPathAliasCreate
 */
class EntityPathAliasCreateDeriver extends DeriverBase implements ContainerDeriverInterface {
    use StringTranslationTrait;
    
    /**
     * The entity type manager.
     *
     * @var \Drupal\Core\Entity\EntityTypeManagerInterface
     */
    protected $entityTypeManager;
    
    /**
     * Creates a new EntityPathAliasCreateDeriver object.
     *
     * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
     *   The entity type manager.
     * @param \Drupal\Core\StringTranslation\TranslationInterface $string_translation
     *   The string translation service.
     */
    public function __construct(EntityTypeManagerInterface $entity_type_manager, TranslationInterface $string_translation) {
        $this->entityTypeManager = $entity_type_manager;
        $this->stringTranslation = $string_translation;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container, $base_plugin_id) {
        return new static($container->get('entity_type.manager'), $container->get('string_translation'));
    }
    
    /**
     * {@inheritdoc}
     */
    public function getDerivativeDefinitions($base_plugin_definition) {
        foreach ($this->entityTypeManager
            ->getDefinitions() as $entity_type_id => $entity_type) {
            // Only allow content entities and ignore configuration entities.
            if (!$entity_type instanceof ContentEntityTypeInterface) {
                continue;
            }
            $this->derivatives["entity:{$entity_type_id}"] = [
                'label' => $this->t('Create a @entity_type path alias', [
                    '@entity_type' => $entity_type->getSingularLabel(),
                ]),
                'category' => $this->t('Path'),
                'provider' => 'path_alias',
                'entity_type_id' => $entity_type_id,
                'context_definitions' => [
                    'entity' => ContextDefinition::create("entity:{$entity_type_id}")->setLabel($entity_type->getLabel())
                        ->setRequired(TRUE)
                        ->setDescription($this->t('The @entity_type for which to create a path alias.', [
                        '@entity_type' => $entity_type->getSingularLabel(),
                    ])),
                    'alias' => ContextDefinition::create('string')->setLabel($this->t('Path alias'))
                        ->setRequired(TRUE)
                        ->setDescription($this->t("Specify an alternative path by which the content can be accessed. For example, '/about' for an about page. Use an absolute path and do not add a trailing slash.")),
                ],
                'provides' => [],
            ] + $base_plugin_definition;
        }
        return $this->derivatives;
    }

}