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<?php
namespace Drupal\age_field_formatter\Plugin\Field\FieldFormatter;
use Drupal\Component\Utility\Html;
use Drupal\Core\Entity\EntityStorageInterface;
use Drupal\Core\Field\FieldItemInterface;
use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Field\FormatterBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Datetime\DrupalDateTime;
use Drupal\Core\Datetime\DateFormatterInterface;
use Drupal\datetime\Plugin\Field\FieldType\DateTimeItemInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
class AgeFieldFormatter extends FormatterBase implements ContainerFactoryPluginInterface {
protected $dateFormatter;
protected $dateFormatStorage;
public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
$formatter = new static($plugin_id, $plugin_definition, $configuration['field_definition'], $configuration['settings'], $configuration['label'], $configuration['view_mode'], $configuration['third_party_settings']);
$container
->get('date.formatter');
$formatter
->setDateFormatter($container
->get('date.formatter'));
$formatter
->setDateFormat($container
->get('entity_type.manager')
->getStorage('date_format'));
return $formatter;
}
public static function defaultSettings() {
$options = parent::defaultSettings();
$options['date_format'] = DateTimeItemInterface::DATETIME_STORAGE_FORMAT;
$options['age_format'] = TRUE;
$options['year_suffix'] = TRUE;
return $options;
}
public function settingsForm(array $form, FormStateInterface $form_state) {
$elements = parent::settingsForm($form, $form_state);
$age_formats = [
'birthdate' => $this
->t('Date plus Age with label'),
'birthdate_nolabel' => $this
->t('Date with no Age label'),
'age_only' => $this
->t('Age only'),
];
$elements['age_format'] = [
'#type' => 'select',
'#title' => $this
->t('Date/age format'),
'#options' => $age_formats,
'#default_value' => $this
->getSetting('age_format'),
'#attributes' => array(
'class' => array(
'age-format-select',
),
),
];
$elements['year_suffix'] = [
'#type' => 'checkbox',
'#title' => $this
->t('Display a “years” suffix after the age'),
'#default_value' => $this
->getSetting('year_suffix'),
];
$elements['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'),
'#attributes' => array(
'class' => array(
'date-format',
),
),
];
return $elements;
}
public function settingsSummary() {
$summary = [];
$setting = $this
->getSetting('age_format');
$year_suffix = $this
->getSetting('year_suffix');
$year_suffix_summary = $this
->t('years suffix');
if ($setting == 'age_only') {
$format = $this
->t('age only');
}
elseif ($setting == 'birthdate_nolabel') {
$format = $this
->t('date (age)');
}
else {
$format = $this
->t('date (age: xx)');
}
if ($year_suffix == true) {
$format = $format . ' + ' . $year_suffix_summary;
}
$summary[] = $this
->t('Age format: %format', [
'%format' => $format,
]);
return $summary;
}
public function viewElements(FieldItemListInterface $items, $langcode) {
$elements = [];
foreach ($items as $delta => $item) {
$elements[$delta] = [
'#markup' => $this
->viewValue($item),
];
}
return $elements;
}
protected function viewValue(FieldItemInterface $item) {
$from = new DrupalDateTime($item->date);
$to = new DrupalDateTime();
$age = $from
->diff($to)->y;
$agelabel = $this
->t('Age');
$setting = $this
->getSetting('age_format');
$year_suffix = $this
->getSetting('year_suffix');
$format = $this
->getSetting('date_format');
$timezone = $this
->getSetting('timezone_override');
$date_raw = $item
->getValue();
$date = strtotime($date_raw['value']);
$date_formatted = $this->dateFormatter
->format($date, 'custom', $format, $timezone != '' ? $timezone : NULL);
if ($year_suffix == true) {
$age_suffix = $this->stringTranslation
->formatPlural($age, 'year', 'years');
$age = $age . ' ' . $age_suffix;
}
if ($setting == 'birthdate') {
$age_formatted = $date_formatted . " (" . $agelabel . ": " . $age . ")";
}
elseif ($setting == 'birthdate_nolabel') {
$age_formatted = $date_formatted . " (" . $age . ")";
}
else {
$age_formatted = $age;
}
return nl2br(Html::escape($age_formatted));
}
public function setDateFormatter(DateFormatterInterface $date_formatter) {
$this->dateFormatter = $date_formatter;
}
public function setDateFormat(EntityStorageInterface $date_format_storage) {
$this->dateFormatStorage = $date_format_storage;
}
}