Handles form errors. Hierarchy class \Drupal\Core\Form\

public FormStateDecoratorBase::setErrorByName($name, $message

public FormBuilder::executeSubmitHandlers(&$form, FormStateInterface &a

public FormStateDecoratorBase::setValues(array $values)

public FormBuilder::setInvalidTokenError(FormStateInterface $form_state)

public &FormStateDecoratorBase::getValue($key, $default

public &FormStateInterface::getValues()

public FormStateInterface::getCacheableArray()

If TRUE, programmatic form submissions are processed without taking #access into account. Set this to FALSE when submitting a form programmatically with values that may have

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