public function SingleDateTimeRangeWidget::validateSingleDateTime in Single DateTimePicker 8

Callback #element_validate to ensure that the start date <= the end date.

Parameters

array $element: An associative array containing the properties and children of the generic form element.

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

array $complete_form: The complete form structure.

File

modules/single_datetime_range/src/Plugin/Field/FieldWidget/SingleDateTimeRangeWidget.php, line 121

Class

SingleDateTimeRangeWidget

Plugin implementation of the 'daterange_default' widget.

Namespace

Drupal\single_datetime_range\Plugin\Field\FieldWidget

Code

public function validateSingleDateTime(array &$element, FormStateInterface $form_state, array &$complete_form) {

  // String to DrupalDateTime.
  $start_date = new DrupalDateTime($element['value']['#value']);
  $end_date = new DrupalDateTime($element['end_value']['#value']);
  if ($start_date instanceof DrupalDateTime && $end_date instanceof DrupalDateTime) {
    if ($start_date
      ->getTimestamp() !== $end_date
      ->getTimestamp()) {
      $interval = $start_date
        ->diff($end_date);
      if ($interval->invert === 1) {
        $form_state
          ->setError($element, $this
          ->t('The @title end date cannot be before the start date', [
          '@title' => $element['#title'],
        ]));
      }
    }
  }
}