learnosity-1.0.x-dev/src/Plugin/Field/FieldFormatter/LearnosityActivityFormatterBase.php

<?php

namespace Drupal\learnosity\Plugin\Field\FieldFormatter;

use Drupal\Core\Entity\EntityTypeManagerInterface;
use Drupal\Core\Field\FieldDefinitionInterface;
use Drupal\Core\Field\FieldItemInterface;
use Drupal\Core\Field\FormatterBase;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Parent plugin for learnosity activity field formatters.
 */
abstract class LearnosityActivityFormatterBase extends FormatterBase {

  /**
   * The entity type manager.
   *
   * @var \Drupal\Core\Entity\EntityTypeManagerInterface
   */
  protected $entityTypeManager;

  /**
   * Constructs a LearnosityActivityFormatterBase 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\Entity\EntityTypeManagerInterface $entity_type_manager
   *   The entity type manager.
   */
  public function __construct($plugin_id, $plugin_definition, FieldDefinitionInterface $field_definition, array $settings, $label, $view_mode, array $third_party_settings, EntityTypeManagerInterface $entity_type_manager) {
    parent::__construct($plugin_id, $plugin_definition, $field_definition, $settings, $label, $view_mode, $third_party_settings);
    $this->entityTypeManager = $entity_type_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('entity_type.manager')
    );
  }

  /**
   * Fetches the Learnosity Activity entity.
   *
   * @param \Drupal\Core\Field\FieldItemInterface $item
   *   The field item.
   *
   * @return \Drupal\Core\Entity\EntityInterface
   *   The Learnosity Activity entity.
   *
   * @throws \Drupal\Component\Plugin\Exception\InvalidPluginDefinitionException
   * @throws \Drupal\Component\Plugin\Exception\PluginNotFoundException
   */
  public function getActivityEntity(FieldItemInterface $item) {
    $value = $item->getValue();
    return $this->entityTypeManager->getStorage('learnosity_activity')->load($value['target_id']);
  }

  /**
   * Generate the output appropriate for one field item.
   *
   * @param \Drupal\Core\Field\FieldItemInterface $item
   *   One field item.
   *
   * @return mixed
   *   The textual output generated.
   *
   * @throws \Drupal\Component\Plugin\Exception\InvalidPluginDefinitionException
   * @throws \Drupal\Component\Plugin\Exception\PluginNotFoundException
   */
  public function viewValue(FieldItemInterface $item) {
    $value = $item->getValue();
    $entity = $this->entityTypeManager->getStorage('learnosity_activity')->load($value['target_id']);
    return $entity->getReference();
  }

}