function Textfield::valueCallback

Overrides FormElementBase::valueCallback

1 call to Textfield::valueCallback()
TextfieldTest::testValueCallback in core/tests/Drupal/Tests/Core/Render/Element/TextfieldTest.php
Tests value callback.
3 methods override Textfield::valueCallback()
EntityAutocomplete::valueCallback in core/lib/Drupal/Core/Entity/Element/EntityAutocomplete.php
Determines how user input is mapped to an element's #value property.
MachineName::valueCallback in core/lib/Drupal/Core/Render/Element/MachineName.php
Determines how user input is mapped to an element's #value property.
PathElement::valueCallback in core/lib/Drupal/Core/Render/Element/PathElement.php
Determines how user input is mapped to an element's #value property.

File

core/lib/Drupal/Core/Render/Element/Textfield.php, line 68

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([
      "\r",
      "\n",
    ], '', $input);
  }
  return NULL;
}

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