From 01ffc40686856baa84aec1f92bebcd9fa8aa53a0 Mon Sep 17 00:00:00 2001
From: rex <rexkaneki@gmail.com>
Date: Mon, 24 Jun 2019 19:56:51 +0800
Subject: [PATCH] =?UTF-8?q?[bugfix]=20DatetimePicker:=20=E4=BF=AE=E5=A4=8D?=
 =?UTF-8?q?=E5=8A=A8=E6=80=81=E6=9B=B4=E6=96=B0minDate=E6=97=B6=E6=9C=AA?=
 =?UTF-8?q?=E6=9B=B4=E6=96=B0=E6=95=B0=E6=8D=AE?=
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fix #1718
---
 packages/datetime-picker/index.ts | 26 ++++++++++++++++----------
 1 file changed, 16 insertions(+), 10 deletions(-)

diff --git a/packages/datetime-picker/index.ts b/packages/datetime-picker/index.ts
index fa76a79b..da7a80c5 100644
--- a/packages/datetime-picker/index.ts
+++ b/packages/datetime-picker/index.ts
@@ -90,24 +90,30 @@ VantComponent({
   },
 
   watch: {
-    value(val: any) {
+    value: 'updateValue',
+    type: 'updateValue',
+    minDate: 'updateValue',
+    maxDate: 'updateValue',
+    minHour: 'updateValue',
+    maxHour: 'updateValue',
+    minMinute: 'updateValue',
+    maxMinute: 'updateValue'
+  },
+
+  methods: {
+    updateValue() {
       const { data } = this;
-      val = this.correctValue(val);
+      const val = this.correctValue(this.data.value);
       const isEqual = val === data.innerValue;
       if (!isEqual) {
         this.updateColumnValue(val).then(() => {
           this.$emit('input', val);
         });
+      } else {
+        this.updateColumns();
       }
     },
-    type: 'updateColumns',
-    minHour: 'updateColumns',
-    maxHour: 'updateColumns',
-    minMinute: 'updateColumns',
-    maxMinute: 'updateColumns'
-  },
 
-  methods: {
     getPicker() {
       if (this.picker == null) {
         const picker = (this.picker = this.selectComponent(
@@ -193,7 +199,7 @@ VantComponent({
       return result;
     },
 
-    correctValue(value) {
+    correctValue(value: any) {
       const { data } = this;
       // validate value
       const isDateType = data.type !== 'time';