AccordionBlockFormatter.php in Accordion Blocks 8

Contains Drupal\accordion_blocks\Plugin\Field\FieldFormatter\AccordionBlockFormatter.

Namespace

Drupal\accordion_blocks\Plugin\Field\FieldFormatter

File

src/Plugin/Field/FieldFormatter/AccordionBlockFormatter.php

<?php

/**
 * @file
 * Contains Drupal\accordion_blocks\Plugin\Field\FieldFormatter\AccordionBlockFormatter.
 */
namespace Drupal\accordion_blocks\Plugin\Field\FieldFormatter;

use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Field\Plugin\Field\FieldFormatter\EntityReferenceEntityFormatter;

/**
 * Plugin implementation of the 'accordion_widget_formatter' formatter.
 *
 * @FieldFormatter(
 *   id = "accordion_widget_formatter",
 *   label = @Translation("Accordion Widget"),
 *   field_types = {
 *     "entity_reference",
 *   }
 * )
 */
class AccordionBlockFormatter extends EntityReferenceEntityFormatter {
  public function viewElements(FieldItemListInterface $items, $langcode) {
    $view_mode = $this
      ->getSetting('view_mode');
    $elements = array();
    foreach ($this
      ->getEntitiesToView($items, $langcode) as $delta => $entity) {
      $label = $entity
        ->label();

      // Protect ourselves from recursive rendering.
      static $depth = 0;
      $depth++;
      if ($depth > 20) {
        $this->loggerFactory
          ->get('entity')
          ->error('Recursive rendering detected when rendering entity @entity_type @entity_id. Aborting rendering.', array(
          '@entity_type' => $entity
            ->getEntityTypeId(),
          '@entity_id' => $entity
            ->id(),
        ));
        return $elements;
      }
      if ($entity
        ->id()) {
        $view_builder = \Drupal::entityManager()
          ->getViewBuilder($entity
          ->getEntityTypeId());
        $elements[$delta] = $view_builder
          ->view($entity, $view_mode, $entity
          ->language()
          ->getId());
        $items[$delta]->_attributes += array(
          'resource' => $entity
            ->url(),
          'title' => $label,
        );
      }
      else {

        // This is an "auto_create" item.
        $elements[$delta] = array(
          '#markup' => $label,
        );
      }
      $depth = 0;
    }
    return $elements;
  }
  public function view(FieldItemListInterface $items, $langcode = NULL) {
    $elements = parent::view($items, $langcode);
    $elements['#theme'] = 'accordion_block_formatter';
    $elements['#attached']['library'][] = 'accordion_blocks/accordion-widget';
    $blocks = array();
    foreach ($items as $key => $value) {
      $blocks[$key] = array(
        'content' => $elements[$key],
        'title' => $items[$key]->_attributes['title'],
      );
    }
    $elements['#blocks'] = $blocks;
    return $elements;
  }

}

Classes

Name	Description
AccordionBlockFormatter	Plugin implementation of the 'accordion_widget_formatter' formatter.