function Datetime::valueCallback

Overrides FormElementBase::valueCallback

File

core/lib/Drupal/Core/Datetime/Element/Datetime.php, line 76

Class

Datetime

Provides a datetime element.

Namespace

Code

public static function valueCallback(&$element, $input, FormStateInterface $form_state) {
  $element += [
    '#date_timezone' => date_default_timezone_get(),
  ];
  if ($input !== FALSE) {
    if ($element['#date_date_element'] === 'datetime-local' && !empty($input['date'])) {
      // With a datetime-local input, the date value is always normalized to
      // the format Y-m-d\TH:i
      // @see https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/datetime-local
      // 'html_datetime' is not a valid format to pass to
      // DrupalDateTime::createFromFormat()
      [
        $date_input,
        $time_input,
      ] = explode('T', $input['date']);
      $date_format = DateFormat::load('html_date')->getPattern();
      $time_format = DateFormat::load('html_time')->getPattern();
    }
    else {
      $date_input = $element['#date_date_element'] != 'none' && !empty($input['date']) ? $input['date'] : '';
      $time_input = $element['#date_time_element'] != 'none' && !empty($input['time']) ? $input['time'] : '';
      $date_format = $element['#date_date_format'] != 'none' ? static::getHtml5DateFormat($element) : '';
      $time_format = $element['#date_time_element'] != 'none' ? static::getHtml5TimeFormat($element) : '';
    }
    // Seconds will be omitted in a post in case there's no entry.
    if (!empty($time_input) && strlen($time_input) == 5) {
      $time_input .= ':00';
    }
    try {
      $date_time_format = trim($date_format . ' ' . $time_format);
      $date_time_input = trim($date_input . ' ' . $time_input);
      $date = DrupalDateTime::createFromFormat($date_time_format, $date_time_input, $element['#date_timezone']);
    } catch (\Exception) {
      $date = NULL;
    }
    $input = [
      'date' => $date_input,
      'time' => $time_input,
      'object' => $date,
    ];
  }
  else {
    $date = $element['#default_value'] ?? NULL;
    if ($date instanceof DrupalDateTime && !$date->hasErrors()) {
      $date->setTimezone(new \DateTimeZone($element['#date_timezone']));
      $input = [
        'date' => $date->format($element['#date_date_format']),
        'time' => $date->format($element['#date_time_format']),
        'object' => $date,
      ];
    }
    else {
      $input = [
        'date' => '',
        'time' => '',
        'object' => NULL,
      ];
    }
  }
  return $input;
}