From 77e215854094b1dc625ffc02a69260f5bd213747 Mon Sep 17 00:00:00 2001
From: liaoxuezhi <liaoxuezhi@baidu.com>
Date: Tue, 10 Sep 2019 12:35:33 +0800
Subject: [PATCH] =?UTF-8?q?form=20data=20=E5=8F=AF=E4=BB=A5=E9=80=9A?=
 =?UTF-8?q?=E8=BF=87=20=5F=5Fpristine=20=E8=8E=B7=E5=8F=96=E5=8E=9F?=
 =?UTF-8?q?=E5=A7=8B=E5=80=BC?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/store/form.ts | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/store/form.ts b/src/store/form.ts
index 2d45b330..3328914f 100644
--- a/src/store/form.ts
+++ b/src/store/form.ts
@@ -122,13 +122,23 @@ export const FormStore = ServiceStore.named('FormStore')
             }
 
             setVariable(data, name, value);
-            self.data = data;
 
             if (isPristine) {
                 const pristine = cloneObject(self.pristine);
                 setVariable(pristine, name, value);
                 self.pristine = pristine;
             }
+            
+            if (!data.__pristine) {
+                Object.defineProperty(data, '__pristine', {
+                    value: self.pristine,
+                    enumerable: false,
+                    configurable: false,
+                    writable: false
+                });
+            }
+
+            self.data = data;
 
             if (self.persistData) {
                 setPersistData();