From 700a0f23f78662253a1f5300d083d18f41bb74d0 Mon Sep 17 00:00:00 2001
From: neverland <chenjiahan@youzan.com>
Date: Mon, 15 Jun 2020 17:42:21 +0800
Subject: [PATCH] fix(Field): should not display null (#6542)

---
 src/field/index.js           |  2 +-
 src/field/test/index.spec.js | 11 +++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/field/index.js b/src/field/index.js
index 539d0ad59..5ec101d93 100644
--- a/src/field/index.js
+++ b/src/field/index.js
@@ -280,7 +280,7 @@ export default createComponent({
     },
 
     updateValue(value) {
-      value = String(value);
+      value = isDef(value) ? String(value) : '';
 
       if (value === this.currentValue) {
         return;
diff --git a/src/field/test/index.spec.js b/src/field/test/index.spec.js
index dde38f045..9867377e4 100644
--- a/src/field/test/index.spec.js
+++ b/src/field/test/index.spec.js
@@ -380,3 +380,14 @@ test('should blur search input on enter', () => {
   wrapper.find('input').trigger('keypress.enter');
   expect(wrapper.emitted('blur')).toBeTruthy();
 });
+
+test('value is null', () => {
+  const wrapper = mount(Field, {
+    propsData: {
+      value: null,
+    },
+  });
+
+  expect(wrapper.find('input').element.value).toEqual('');
+  expect(wrapper.emitted('input')[0][0]).toEqual('');
+});