public static function Datetime::valueCallback in Drupal 8

Same name and namespace in other branches

1. 9 core/lib/Drupal/Core/Datetime/Element/Datetime.php \Drupal\Core\Datetime\Element\Datetime::valueCallback()

Determines how user input is mapped to an element's #value property.

Parameters

array $element: An associative array containing the properties of the element.

mixed $input: The incoming input to populate the form element. If this is FALSE, the element's default value should be returned.

\Drupal\Core\Form\FormStateInterface $form_state: The current state of the form.

Return value

mixed The value to assign to the element.

Overrides FormElement::valueCallback

File

core/lib/Drupal/Core/Datetime/Element/Datetime.php, line 73

Class

Datetime

Provides a datetime element.

Namespace

Drupal\Core\Datetime\Element

Code

public static function valueCallback(&$element, $input, FormStateInterface $form_state) {
  $element += [
    '#date_timezone' => date_default_timezone_get(),
  ];
  if ($input !== FALSE) {
    $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 = $element['#date_date_element'] != 'none' ? static::getHtml5DateFormat($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 $e) {
      $date = NULL;
    }
    $input = [
      'date' => $date_input,
      'time' => $time_input,
      'object' => $date,
    ];
  }
  else {
    $date = isset($element['#default_value']) ? $element['#default_value'] : NULL;
    if ($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;
}