Issue #3104204 by AdamPS: Add submitted formatter setting for user view mode

      'base hook' => 'username',

      'variables' => [

        'date' => NULL,

        'user_picture' => NULL,

        'metadata' => [],

        'account' => NULL,

        'attributes' => [],

 * Prepares variables for 'submitted' field formatter template.

 */

function template_preprocess_submitted(&$variables) {

  $account = $variables['account'];

  // @todo Don't use the theme setting, instead put a setting in the formatter

  // to choose a display mode (don't hard-code to 'compact').

  // Hence hide the GUI for features.node_user_picture.

  if (theme_get_setting('features.node_user_picture')) {

    // To change user picture settings (e.g. image style), edit the 'compact'

    // view mode on the User entity. Note that the 'compact' view mode might

    // not be configured, so remember to always check the theme setting first.

    $variables['author_picture'] = user_view($account, 'compact');

  }

  $variables['date'] = \Drupal::service('date.formatter')->format($variables['date']);

}

  // Hide display_submitted in GUI.

  $form['display']['#access'] = FALSE;

}

/**

 * Implements hook_form_FORM_ID_alter().

 */

function manage_display_form_system_theme_settings_alter(&$form, FormStateInterface $form_state, $form_id) {

  // Hide the theme settings for user_pictures because the submitted formatter

  // has its own setting.

  $form['theme_settings']['toggle_node_user_picture']['#access'] = FALSE;

  //$form['theme_settings']['toggle_comment_user_picture']['#access'] = FALSE;

}

namespace Drupal\manage_display\Plugin\Field\FieldFormatter;

use Drupal\Core\Entity\EntityDisplayRepositoryInterface;

use Drupal\Core\Field\FieldDefinitionInterface;

use Drupal\Core\Field\FieldItemListInterface;

use Drupal\Core\Form\FormStateInterface;

use Drupal\user\Plugin\Field\FieldFormatter\AuthorFormatter;

use Symfony\Component\DependencyInjection\ContainerInterface;

/**

 * A field formatter for entity titles.

 */

class SubmittedFormatter extends AuthorFormatter {

  /**

   * The entity display repository.

   *

   * @var \Drupal\Core\Entity\EntityDisplayRepositoryInterface

   */

  protected $entityDisplayRepository;

  /**

   * Constructs a EntityReferenceEntityFormatter instance.

   *

   * @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 settings.

   * @param \Drupal\Core\Entity\EntityDisplayRepositoryInterface $entity_display_repository

   *   The entity display repository.

   */

  public function __construct($plugin_id, $plugin_definition, FieldDefinitionInterface $field_definition, array $settings, $label, $view_mode, array $third_party_settings, EntityDisplayRepositoryInterface $entity_display_repository) {

    parent::__construct($plugin_id, $plugin_definition, $field_definition, $settings, $label, $view_mode, $third_party_settings);

    $this->entityDisplayRepository = $entity_display_repository;

  }

  /**

   * {@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_display.repository')

    );

  }

  /**

   * {@inheritdoc}

   */

  public static function defaultSettings() {

    $options = parent::defaultSettings();

    $options['user_picture'] = '';

    return $options;

  }

  /**

   * {@inheritdoc}

   */

  public function settingsForm(array $form, FormStateInterface $form_state) {

    $form = parent::settingsForm($form, $form_state);

    $view_modes = ['' => $this->t('- None -')];

    $view_modes += $this->entityDisplayRepository->getViewModeOptions($this->getFieldSetting('target_type'));

    $form['user_picture'] = [

      '#type' => 'select',

      '#options' => $view_modes,

      '#title' => $this->t('View mode for user picture'),

      '#default_value' => $this->getSetting('user_picture'),

    ];

    return $form;

  }

  /**

   * {@inheritdoc}

   */

  public function settingsSummary() {

    $summary = [];

    if ($view_mode = $this->getSetting('user_picture')) {

      $view_modes = $this->entityDisplayRepository->getViewModeOptions($this->getFieldSetting('target_type'));

      $summary[] = t('User picture view mode: @mode', ['@mode' => $view_modes[$view_mode] ?? $view_mode]);

    }

    else {

      $summary[] = t('No user picture');

    }

    return $summary;

  }

  /**

   * {@inheritdoc}

   */

  public function viewElements(FieldItemListInterface $items, $langcode) {

    $elements = parent::viewElements($items, $langcode);

    foreach ($elements as $delta => $entity) {

      $elements[$delta]['#theme'] = 'submitted';

      $elements[$delta]['#date'] = $items->getEntity()->get('created')->value ?? NULL;

    foreach ($elements as &$element) {

      $element['#theme'] = 'submitted';

      $element['#date'] = $items->getEntity()->get('created')->value ?? NULL;

      if ($view_mode = $this->getSetting('user_picture')) {

        $element['#user_picture'] = user_view($element['#account'], $view_mode);

      }

    }

    return $elements;

 * contents of username.html.twig.

 *

 * Available variables:

 * - author_picture: The author user entity, rendered using the "compact"

 *   view mode.

 * - user_picture: The rendered author user entity

 * - metadata: Metadata for this entity.

 * - date: Creation date field.

 * - author_attributes: HTML attributes for the containing element.

 */

#}

<footer>

  {{ author_picture }}

  {{ user_picture }}

  <div{{ author_attributes }}>

    {% if link_path -%}

      {% if date -%}