public static function FormElement::valueCallback in Drupal 9

Same name and namespace in other branches

1. 8 core/lib/Drupal/Core/Render/Element/FormElement.php \Drupal\Core\Render\Element\FormElement::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 FormElementInterface::valueCallback

15 methods override FormElement::valueCallback()

Checkbox::valueCallback in core/lib/Drupal/Core/Render/Element/Checkbox.php

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

Checkboxes::valueCallback in core/lib/Drupal/Core/Render/Element/Checkboxes.php

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

Datelist::valueCallback in core/lib/Drupal/Core/Datetime/Element/Datelist.php

Validates the date type to adjust 12 hour time and prevent invalid dates. If the date is valid, the date is set in the form.

Datetime::valueCallback in core/lib/Drupal/Core/Datetime/Element/Datetime.php

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

ImageButton::valueCallback in core/lib/Drupal/Core/Render/Element/ImageButton.php

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

... See full list

File

core/lib/Drupal/Core/Render/Element/FormElement.php, line 96

Class

FormElement

Provides a base class for form element plugins.

Namespace

Drupal\Core\Render\Element

Code

public static function valueCallback(&$element, $input, FormStateInterface $form_state) {
  return NULL;
}