From f5d9bbacc126ebf40a7bc74f42250817d999fe35 Mon Sep 17 00:00:00 2001
From: gaochengyi <gaochengyidlmu@163.com>
Date: Mon, 2 Jul 2018 15:08:30 +0800
Subject: [PATCH] value is null should not validate

---
 index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.js b/index.js
index 31cf0ea..d4617f8 100644
--- a/index.js
+++ b/index.js
@@ -72,7 +72,7 @@ class Parameter {
       var rule = formatRule(rules[key]);
       var has = obj.hasOwnProperty(key);
 
-      if (!has) {
+      if (obj[key] === null || !has) {
         if (rule.required !== false) {
           errors.push({
             message: this.t('required'),