FieldLink.php in (Entity Reference) Field Formatters 3.x

Namespace

Drupal\field_formatter\Plugin\Field\FieldFormatter

File

src/Plugin/Field/FieldFormatter/FieldLink.php

<?php

namespace Drupal\field_formatter\Plugin\Field\FieldFormatter;

use Drupal\Core\Field\FieldDefinitionInterface;
use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Field\FormatterPluginManager;
use Drupal\Core\Language\LanguageManagerInterface;
use Drupal\Core\Render\Element;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Provides the field link formatter.
 *
 * @FieldFormatter(
 *   id = "field_link",
 *   label = @Translation("Field linker"),
 *   field_types = {
 *   },
 * )
 */
class FieldLink extends FieldWrapperBase {

  /**
   * The language manager object for retrieving the correct language code.
   *
   * @var \Drupal\Core\Language\LanguageManagerInterface
   */
  protected $languageManager;

  /**
   * Constructs a FieldLink object.
   *
   * @param string $plugin_id
   *   The plugin_id for the formatter.
   * @param mixed $plugin_definition
   *   The plugin implementation definition.
   * @param \Drupal\Core\Field\FieldDefinitionInterface $field_definition
   *   The definition of the field to which the formatter is associated.
   * @param array $settings
   *   The formatter settings.
   * @param string $label
   *   The formatter label display setting.
   * @param string $view_mode
   *   The view mode.
   * @param array $third_party_settings
   *   Any third party settings.
   * @param \Drupal\Core\Field\FormatterPluginManager $formatter_plugin_manager
   *   The formatter plugin manager.
   * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
   *   The language manager object for retrieving the correct language code.
   */
  public function __construct($plugin_id, $plugin_definition, FieldDefinitionInterface $field_definition, array $settings, $label, $view_mode, array $third_party_settings, FormatterPluginManager $formatter_plugin_manager, LanguageManagerInterface $language_manager) {
    parent::__construct($plugin_id, $plugin_definition, $field_definition, $settings, $label, $view_mode, $third_party_settings, $formatter_plugin_manager);
    $this->languageManager = $language_manager;
  }

  /**
   * {@inheritDoc}
   */
  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
    return new static($plugin_id, $plugin_definition, $configuration['field_definition'], $configuration['settings'], $configuration['label'], $configuration['view_mode'], $configuration['third_party_settings'], $container
      ->get('plugin.manager.field.formatter'), $container
      ->get('language_manager'));
  }

  /**
   * {@inheritdoc}
   */
  public function viewElements(FieldItemListInterface $items, $langcode) {
    $field_output = $this
      ->getFieldOutput($items, $langcode);
    $elements = [];
    foreach (Element::children($field_output) as $key) {
      $entityUrl = $items
        ->getEntity()
        ->toUrl('canonical', [
        'language' => $this->languageManager
          ->getLanguage($langcode),
      ]);
      $elements[$key] = [
        '#type' => 'link',
        '#url' => $entityUrl,
        '#title' => $field_output[$key],
      ];
    }
    return $elements;
  }

}

Classes

Name	Description
FieldLink	Provides the field link formatter.