public static function Textfield::valueCallback

public static Textfield::valueCallback(&$element, $input, FormStateInterface $form_state)

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/Render/Element/Textfield.php, line 73

Class

Textfield

Provides a one-line text field form element.

Namespace

Drupal\Core\Render\Element

Code

public static function valueCallback(&$element, $input, FormStateInterface $form_state) {
  if ($input !== FALSE && $input !== NULL) {
    // This should be a string, but allow other scalars since they might be
    // valid input in programmatic form submissions.
    if (!is_scalar($input)) {
      $input = '';
    }
    return str_replace(array("\r", "\n"), '', $input);
  }
  return NULL;
}