DownloadLinkFormatter.php in Download 8.2

Contains \Drupal\download\Plugin\Field\FieldFormatter\DownloadLinkFormatter.

Namespace

Drupal\download\Plugin\Field\FieldFormatter

File

src/Plugin/Field/FieldFormatter/DownloadLinkFormatter.php

<?php

/**
 * @file
 * Contains \Drupal\download\Plugin\Field\FieldFormatter\DownloadLinkFormatter.
 */
namespace Drupal\download\Plugin\Field\FieldFormatter;

use Drupal\Core\Field\FormatterBase;
use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Url;

/**
 * @FieldFormatter(
 *  id = "download_link_formatter",
 *  label = @Translation("Download link formatter"),
 *  field_types = {"download_link"}
 * )
 */
class DownloadLinkFormatter extends FormatterBase {
  public function viewElements(FieldItemListInterface $items, $langcode) {
    $output = array();
    $entity = $items
      ->getEntity();
    foreach ($items as $delta => $item) {
      $element = array();
      $element['container'] = array(
        '#type' => 'container',
        '#attributes' => array(
          'class' => array(
            'download_link',
          ),
        ),
      );
      $valid_file_found = FALSE;
      $fname = NULL;
      if ($item->download_fields) {
        $fields = unserialize($item->download_fields);
        foreach ($fields as $fieldname) {
          $files = $entity->{$fieldname};
          if ($files instanceof FieldItemListInterface && !$files
            ->isEmpty()) {
            foreach ($files as $file) {
              $fileEntity = $file->entity;
              $uri = $fileEntity
                ->getFileUri();
              if (file_valid_uri($uri)) {
                $valid_file_found = TRUE;
                $fname = $items
                  ->getName();
              }
            }
          }
        }
      }
      if ($valid_file_found) {
        $element['container']['value'] = array(
          '#type' => 'link',
          '#title' => $item
            ->get('download_label')
            ->getValue(),
          '#url' => Url::fromRoute('download.download', array(
            'bundle' => $entity
              ->bundle(),
            'entity_type' => $entity
              ->getEntityTypeId(),
            'fieldname' => $fname,
            'entity_id' => $entity
              ->id(),
            'delta' => $delta,
          )),
        );
        $output[$delta] = $element;
      }
    }
    return $output;
  }

  /**
   * {@inheritdoc}
   */
  public function settingsSummary() {
    $summary = array();
    $settings = $this
      ->getSettings();
    $summary[] = t('Displays a link to download all files in selected fields.');
    return $summary;
  }

}

Classes

Name	Description
DownloadLinkFormatter	Plugin annotation @FieldFormatter( id = "download_link_formatter", label = @Translation("Download link formatter"), field_types = {"download_link"} )