The form element that triggered submission, which may or may not be a button (in the case of Ajax forms). This key is often used to distinguish between various buttons in a

If set to TRUE the form will NOT perform a redirect, even if self::$redirect is set. This property is uncacheable.

public &FormState::getGroups() Returns

public FormState::isMethodType($method_type) Returns

public FormState::setValidateHandlers(array $validate_handlers)

public FormState::cleanValues() Removes

public FormState::setTriggeringElement($triggering_element)

Stores the gathered validation handlers. This property is uncacheable. Type:

public FormState::setRebuild($rebuild = TRUE) Sets

Stores information about the state of a form. Hierarchy class \Drupal\Core\Form\