DateTimeCustomFormatter.php in Drupal 8

Namespace

Drupal\datetime\Plugin\Field\FieldFormatter

File

core/modules/datetime/src/Plugin/Field/FieldFormatter/DateTimeCustomFormatter.php

<?php

namespace Drupal\datetime\Plugin\Field\FieldFormatter;

use Drupal\Core\Datetime\DrupalDateTime;
use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\datetime\Plugin\Field\FieldType\DateTimeItemInterface;

/**
 * Plugin implementation of the 'Custom' formatter for 'datetime' fields.
 *
 * @FieldFormatter(
 *   id = "datetime_custom",
 *   label = @Translation("Custom"),
 *   field_types = {
 *     "datetime"
 *   }
 *)
 */
class DateTimeCustomFormatter extends DateTimeFormatterBase {

  /**
   * {@inheritdoc}
   */
  public static function defaultSettings() {
    return [
      'date_format' => DateTimeItemInterface::DATETIME_STORAGE_FORMAT,
    ] + parent::defaultSettings();
  }

  /**
   * {@inheritdoc}
   */
  public function viewElements(FieldItemListInterface $items, $langcode) {

    // @todo Evaluate removing this method in
    // https://www.drupal.org/node/2793143 to determine if the behavior and
    // markup in the base class implementation can be used instead.
    $elements = [];
    foreach ($items as $delta => $item) {
      if (!empty($item->date)) {

        /** @var \Drupal\Core\Datetime\DrupalDateTime $date */
        $date = $item->date;
        $elements[$delta] = $this
          ->buildDate($date);
      }
    }
    return $elements;
  }

  /**
   * {@inheritdoc}
   */
  protected function formatDate($date) {
    $format = $this
      ->getSetting('date_format');
    $timezone = $this
      ->getSetting('timezone_override') ?: $date
      ->getTimezone()
      ->getName();
    return $this->dateFormatter
      ->format($date
      ->getTimestamp(), 'custom', $format, $timezone != '' ? $timezone : NULL);
  }

  /**
   * {@inheritdoc}
   */
  public function settingsForm(array $form, FormStateInterface $form_state) {
    $form = parent::settingsForm($form, $form_state);
    $form['date_format'] = [
      '#type' => 'textfield',
      '#title' => $this
        ->t('Date/time format'),
      '#description' => $this
        ->t('See <a href="http://php.net/manual/function.date.php" target="_blank">the documentation for PHP date formats</a>.'),
      '#default_value' => $this
        ->getSetting('date_format'),
    ];
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function settingsSummary() {
    $summary = parent::settingsSummary();
    $date = new DrupalDateTime();
    $this
      ->setTimeZone($date);
    $summary[] = $date
      ->format($this
      ->getSetting('date_format'), $this
      ->getFormatSettings());
    return $summary;
  }

}

Classes

Name	Description
DateTimeCustomFormatter	Plugin implementation of the 'Custom' formatter for 'datetime' fields.