public function setValidator($validator = null)
{
if (count($this->getValidators()) === 0 && $validator instanceof FormHandler\Validator\FunctionCallable && is_array($validator->getCallable())) {
$callable = $validator->getCallable();
//detect if it is an optional validator
if ($callable[0] instanceof Validator && substr($callable[1], 0, 1) !== '_') {
parent::setValidator(new \FormHandler\Validator\NotEmpty());
}
}
return parent::setValidator(FormHandler::parseValidator($validator, $this));
}
