public static function Number::valueCallback in Commerce Core 8.2

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

modules/price/src/Element/Number.php, line 66

Class

Number

Provides a number form element with support for language-specific input.

Namespace

Drupal\commerce_price\Element

Code

public static function valueCallback(&$element, $input, FormStateInterface $form_state) {
  if ($input !== FALSE && $input !== NULL) {
    if (!is_scalar($input)) {
      $input = '';
    }
    return trim($input);
  }
  elseif (!empty($element['#default_value'])) {

    // Convert the stored number to the local format. For example, "9.99"
    // becomes "9,99" in many locales. This also strips any extra zeroes.
    $number_formatter = \Drupal::service('commerce_price.number_formatter');
    $number = (string) $element['#default_value'];
    $number = $number_formatter
      ->format($number, [
      'use_grouping' => FALSE,
      'minimum_fraction_digits' => $element['#min_fraction_digits'],
      'maximum_fraction_digits' => $element['#max_fraction_digits'],
    ]);
    return $number;
  }
  return NULL;
}