public FormBuilder::submitForm($form_arg, FormStateInterface &$form_state)

Custom exception to break out of the main request and enforce a response. Hierarchy class

public FormBuilderInterface::doBuildForm($form_id, &$element

Request key for AJAX forms that submit to the form's original route. This constant is distinct from a "drupal_ajax" value for

Stores which errors should be limited during validation. An array of "sections" within which user input must be valid. If the element is within

public ConfirmFormBase::getConfirmText()

public static ConfirmFormHelper::buildCancelLink(ConfirmFormInterface

public FormStateDecoratorBase::setErrorByName($name, $message

public FormStateInterface::setValues(array $values)

The factory for expirable key value stores used by form cache. Type: