Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\views\Entity\Render;
Chris@0: 
Chris@0: use Drupal\Core\Language\LanguageInterface;
Chris@0: use Drupal\views\Plugin\views\query\QueryPluginBase;
Chris@0: use Drupal\views\ResultRow;
Chris@0: 
Chris@0: /**
Chris@0:  * Renders entity translations in their row language.
Chris@0:  */
Chris@0: class TranslationLanguageRenderer extends EntityTranslationRendererBase {
Chris@0: 
Chris@0:   /**
Chris@0:    * Stores the field alias of the langcode column.
Chris@0:    *
Chris@0:    * @var string
Chris@0:    */
Chris@0:   protected $langcodeAlias;
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function query(QueryPluginBase $query, $relationship = NULL) {
Chris@0:     // In order to render in the translation language of the entity, we need
Chris@0:     // to add the language code of the entity to the query. Skip if the site
Chris@0:     // is not multilingual or the entity is not translatable.
Chris@0:     if (!$this->languageManager->isMultilingual() || !$this->entityType->hasKey('langcode')) {
Chris@0:       return;
Chris@0:     }
Chris@0:     $langcode_table = $this->getLangcodeTable($query, $relationship);
Chris@0:     if ($langcode_table) {
Chris@0:       /** @var \Drupal\views\Plugin\views\query\Sql $query */
Chris@0:       $table_alias = $query->ensureTable($langcode_table, $relationship);
Chris@0:       $langcode_key = $this->entityType->getKey('langcode');
Chris@0:       $this->langcodeAlias = $query->addField($table_alias, $langcode_key);
Chris@0:     }
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Returns the name of the table holding the "langcode" field.
Chris@0:    *
Chris@0:    * @param \Drupal\views\Plugin\views\query\QueryPluginBase $query
Chris@0:    *   The query being executed.
Chris@0:    * @param string $relationship
Chris@0:    *   The relationship used by the entity type.
Chris@0:    *
Chris@0:    * @return string
Chris@0:    *   A table name.
Chris@0:    */
Chris@0:   protected function getLangcodeTable(QueryPluginBase $query, $relationship) {
Chris@0:     /** @var \Drupal\Core\Entity\Sql\SqlContentEntityStorage $storage */
Chris@0:     $storage = \Drupal::entityTypeManager()->getStorage($this->entityType->id());
Chris@0:     $langcode_key = $this->entityType->getKey('langcode');
Chris@0:     $langcode_table = $storage->getTableMapping()->getFieldTableName($langcode_key);
Chris@0: 
Chris@0:     // If the entity type is revisionable, we need to take into account views of
Chris@0:     // entity revisions. Usually the view will use the entity data table as the
Chris@0:     // query base table, however, in case of an entity revision view, we need to
Chris@0:     // use the revision table or the revision data table, depending on which one
Chris@0:     // is being used as query base table.
Chris@0:     if ($this->entityType->isRevisionable()) {
Chris@0:       $query_base_table = isset($query->relationships[$relationship]['base']) ?
Chris@0:         $query->relationships[$relationship]['base'] :
Chris@0:         $this->view->storage->get('base_table');
Chris@0:       $revision_table = $storage->getRevisionTable();
Chris@0:       $revision_data_table = $storage->getRevisionDataTable();
Chris@0:       if ($query_base_table === $revision_table) {
Chris@0:         $langcode_table = $revision_table;
Chris@0:       }
Chris@0:       elseif ($query_base_table === $revision_data_table) {
Chris@0:         $langcode_table = $revision_data_table;
Chris@0:       }
Chris@0:     }
Chris@0: 
Chris@0:     return $langcode_table;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function preRender(array $result) {
Chris@18:     $view_builder = \Drupal::entityTypeManager()->getViewBuilder($this->entityType->id());
Chris@0: 
Chris@0:     /** @var \Drupal\views\ResultRow $row */
Chris@0:     foreach ($result as $row) {
Chris@0:       $entity = $row->_entity;
Chris@0:       $entity->view = $this->view;
Chris@0:       $langcode = $this->getLangcode($row);
Chris@0:       $this->build[$entity->id()][$langcode] = $view_builder->view($entity, $this->view->rowPlugin->options['view_mode'], $this->getLangcode($row));
Chris@0:     }
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function render(ResultRow $row) {
Chris@0:     $entity_id = $row->_entity->id();
Chris@0:     $langcode = $this->getLangcode($row);
Chris@0:     return $this->build[$entity_id][$langcode];
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getLangcode(ResultRow $row) {
Chris@0:     return isset($row->{$this->langcodeAlias}) ? $row->{$this->langcodeAlias} : $this->languageManager->getDefaultLanguage()->getId();
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getCacheContexts() {
Chris@0:     return ['languages:' . LanguageInterface::TYPE_CONTENT];
Chris@0:   }
Chris@0: 
Chris@0: }