Controller_Validator_Abstract::on PHP Метод

    public function on($hook, $object = null, $default_hook = false)
    {
        if (!$object) {
            $object = $this->owner;
        }
        if (!$default_hook) {
            $this->custom_hook = true;
        }
        $this->has_hook = true;
        $that = $this;
        $object->addHook($hook, function ($m) use($default_hook, $that) {
            if ($that->custom_hook && $default_hook) {
                return;
            }
            $that->applyRulesets();
        });
    }