From 59740a3b5dc6ac2e446a4ee126e9d91f5c3551c5 Mon Sep 17 00:00:00 2001
From: VergeDX <neko@hydev.org>
Date: Sat, 23 Jan 2021 22:23:18 +0800
Subject: [PATCH] [+] Auto generate joinDate.

---
 .../org/hydev/clock_api/controller/UserController.java     | 1 -
 src/main/java/org/hydev/clock_api/entity/User.java         | 7 +++++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/main/java/org/hydev/clock_api/controller/UserController.java b/src/main/java/org/hydev/clock_api/controller/UserController.java
index e76e172..0bb4b80 100644
--- a/src/main/java/org/hydev/clock_api/controller/UserController.java
+++ b/src/main/java/org/hydev/clock_api/controller/UserController.java
@@ -62,7 +62,6 @@ public class UserController {
         User user = new User();
         user.setUsername(username);
         user.setPasswordMd5(userToSaltedMd5(username, password));
-        user.setJoinDate(new Date());
 
         // After save and flush, uuid field will be generated automatically.
         userRepository.saveAndFlush(user);
diff --git a/src/main/java/org/hydev/clock_api/entity/User.java b/src/main/java/org/hydev/clock_api/entity/User.java
index dcb0b25..bb22972 100644
--- a/src/main/java/org/hydev/clock_api/entity/User.java
+++ b/src/main/java/org/hydev/clock_api/entity/User.java
@@ -1,6 +1,7 @@
 package org.hydev.clock_api.entity;
 
 import lombok.Data;
+import org.hibernate.annotations.CreationTimestamp;
 import org.hibernate.annotations.GenericGenerator;
 import org.hydev.clock_api.error.ErrorCode;
 
@@ -9,6 +10,7 @@ import javax.persistence.GeneratedValue;
 import javax.persistence.Id;
 import javax.validation.constraints.NotNull;
 import javax.validation.constraints.Pattern;
+import java.time.LocalDateTime;
 import java.util.Date;
 
 @Data
@@ -42,6 +44,7 @@ public class User {
     @Pattern(regexp = RE_LOWER_MD5, message = ErrorCode.INNER_PASSWORD_MD5_NOT_MATCH_REGEX)
     private String passwordMd5;
 
-    @NotNull
-    private Date joinDate;
+    // https://stackoverflow.com/questions/8202154/how-to-create-an-auto-generated-date-timestamp-field-in-a-play-jpa/8207652
+    @CreationTimestamp
+    private LocalDateTime joinDate;
 }