/**
* Count/length validator.
* @param MultiSelectBox
* @param array min and max length pair
* @return bool
*/
public static function validateLength(MultiSelectBox $control, $range)
{
if (!is_array($range)) {
$range = array($range, $range);
}
$count = count($control->getSelectedItem());
return ($range[0] === NULL || $count >= $range[0]) && ($range[1] === NULL || $count <= $range[1]);
}
/**
* Adds a validation rule.
* @param mixed rule type
* @param string message to display for invalid data
* @param mixed optional rule arguments
* @return FormControl provides a fluent interface
*/
public function addRule($operation, $message = NULL, $arg = NULL)
{
if ($operation === ':filled' and is_null($message)) {
$message = 'Choose %label';
}
return parent::addRule($operation, $message, $arg);
}