/**
* Builds a string representation of the form accessor.
* This string is used as a part of the key for the layout cache.
*
* @param string $prefix A string that can be used as the form identifier
* @param FormAction|null $action The submit action of the form
* @param string|null $method The submit method of the form
* @param string|null $enctype The encryption type of the form
*
* @return string
*/
protected function buildHash($prefix, FormAction $action = null, $method = null, $enctype = null)
{
$result = $prefix;
if (null !== $action && !$action->isEmpty()) {
$result .= ';action_' . $action->toString();
}
if (!empty($method)) {
$result .= ';method:' . $method;
}
if (!empty($enctype)) {
$result .= ';enctype:' . $enctype;
}
return $result;
}
