RenderedEntity.php

<?php

namespace Drupal\views\Plugin\views\field;

use Drupal\Core\Cache\CacheableDependencyInterface;
use Drupal\Core\Entity\EntityDisplayRepositoryInterface;
use Drupal\Core\Entity\EntityRepositoryInterface;
use Drupal\Core\Entity\EntityTypeManagerInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Language\LanguageManagerInterface;
use Drupal\views\Entity\Render\EntityTranslationRenderTrait;
use Drupal\views\ResultRow;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Drupal\Core\Cache\Cache;

/**
 * Provides a field handler which renders an entity in a certain view mode.
 *
 * @ingroup views_field_handlers
 *
 * @ViewsField("rendered_entity")
 */
class RenderedEntity extends FieldPluginBase implements CacheableDependencyInterface {
    use EntityTranslationRenderTrait;
    
    /**
     * The entity type manager.
     *
     * @var \Drupal\Core\Entity\EntityTypeManagerInterface
     */
    protected $entityTypeManager;
    
    /**
     * The entity repository service.
     *
     * @var \Drupal\Core\Entity\EntityRepositoryInterface
     */
    protected $entityRepository;
    
    /**
     * The entity display repository.
     *
     * @var \Drupal\Core\Entity\EntityDisplayRepositoryInterface
     */
    protected $entityDisplayRepository;
    
    /**
     * The language manager.
     *
     * @var \Drupal\Core\Language\LanguageManagerInterface
     */
    protected $languageManager;
    
    /**
     * Constructs a new RenderedEntity object.
     *
     * @param array $configuration
     *   A configuration array containing information about the plugin instance.
     * @param string $plugin_id
     *   The plugin_id for the plugin instance.
     * @param array $plugin_definition
     *   The plugin implementation definition.
     * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
     *   The entity type manager.
     * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
     *   The language manager.
     * @param \Drupal\Core\Entity\EntityRepositoryInterface $entity_repository
     *   The entity repository.
     * @param \Drupal\Core\Entity\EntityDisplayRepositoryInterface $entity_display_repository
     *   The entity display repository.
     */
    public function __construct(array $configuration, $plugin_id, array $plugin_definition, EntityTypeManagerInterface $entity_type_manager, LanguageManagerInterface $language_manager, EntityRepositoryInterface $entity_repository, EntityDisplayRepositoryInterface $entity_display_repository) {
        parent::__construct($configuration, $plugin_id, $plugin_definition);
        $this->entityTypeManager = $entity_type_manager;
        $this->languageManager = $language_manager;
        $this->entityRepository = $entity_repository;
        $this->entityDisplayRepository = $entity_display_repository;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
        return new static($configuration, $plugin_id, $plugin_definition, $container->get('entity_type.manager'), $container->get('language_manager'), $container->get('entity.repository'), $container->get('entity_display.repository'));
    }
    
    /**
     * {@inheritdoc}
     */
    public function usesGroupBy() {
        return FALSE;
    }
    
    /**
     * {@inheritdoc}
     */
    public function defineOptions() {
        $options = parent::defineOptions();
        $options['view_mode'] = [
            'default' => 'default',
        ];
        return $options;
    }
    
    /**
     * {@inheritdoc}
     */
    public function buildOptionsForm(&$form, FormStateInterface $form_state) {
        parent::buildOptionsForm($form, $form_state);
        $form['view_mode'] = [
            '#type' => 'select',
            '#options' => $this->entityDisplayRepository
                ->getViewModeOptions($this->getEntityTypeId()),
            '#title' => $this->t('View mode'),
            '#default_value' => $this->options['view_mode'],
        ];
    }
    
    /**
     * {@inheritdoc}
     */
    public function render(ResultRow $values) {
        $entity = $this->getEntityTranslation($this->getEntity($values), $values);
        $build = [];
        if (isset($entity)) {
            $access = $entity->access('view', NULL, TRUE);
            $build['#access'] = $access;
            if ($access->isAllowed()) {
                $view_builder = $this->entityTypeManager
                    ->getViewBuilder($this->getEntityTypeId());
                $build += $view_builder->view($entity, $this->options['view_mode'], $entity->language()
                    ->getId());
            }
        }
        return $build;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getCacheContexts() {
        return [];
    }
    
    /**
     * {@inheritdoc}
     */
    public function getCacheTags() {
        $view_display_storage = $this->entityTypeManager
            ->getStorage('entity_view_display');
        $view_displays = $view_display_storage->loadMultiple($view_display_storage->getQuery()
            ->condition('targetEntityType', $this->getEntityTypeId())
            ->execute());
        $tags = [];
        foreach ($view_displays as $view_display) {
            $tags[] = $view_display->getCacheTags();
        }
        return array_merge([], ...$tags);
    }
    
    /**
     * {@inheritdoc}
     */
    public function getCacheMaxAge() {
        return Cache::PERMANENT;
    }
    
    /**
     * {@inheritdoc}
     */
    public function query() {
        // We purposefully do not call parent::query() because we do not want the
        // default query behavior for Views fields. Instead, let the entity
        // translation renderer provide the correct query behavior.
        if ($this->languageManager
            ->isMultilingual()) {
            $this->getEntityTranslationRenderer()
                ->query($this->query, $this->relationship);
        }
    }
    
    /**
     * {@inheritdoc}
     */
    public function getEntityTypeId() {
        return $this->getEntityType();
    }
    
    /**
     * {@inheritdoc}
     */
    protected function getEntityTypeManager() {
        return $this->entityTypeManager;
    }
    
    /**
     * {@inheritdoc}
     */
    protected function getEntityRepository() {
        return $this->entityRepository;
    }
    
    /**
     * {@inheritdoc}
     */
    protected function getLanguageManager() {
        return $this->languageManager;
    }
    
    /**
     * {@inheritdoc}
     */
    protected function getView() {
        return $this->view;
    }
    
    /**
     * {@inheritdoc}
     */
    public function calculateDependencies() {
        $dependencies = parent::calculateDependencies();
        $view_mode = $this->entityTypeManager
            ->getStorage('entity_view_mode')
            ->load($this->getEntityTypeId() . '.' . $this->options['view_mode']);
        if ($view_mode) {
            $dependencies[$view_mode->getConfigDependencyKey()][] = $view_mode->getConfigDependencyName();
        }
        return $dependencies;
    }

}