From 36fa4ea570d51b82d2298d4fd9248aaefd513d0e Mon Sep 17 00:00:00 2001
From: Tim <135014430+nagisa77@users.noreply.github.com>
Date: Wed, 9 Jul 2025 13:50:16 +0800
Subject: [PATCH] Fix default creation timestamps

---
 src/main/java/com/openisle/model/Comment.java      |  9 ++++-----
 src/main/java/com/openisle/model/Notification.java | 10 ++++------
 src/main/java/com/openisle/model/Post.java         |  9 ++++-----
 src/main/java/com/openisle/model/User.java         | 10 ++++------
 4 files changed, 16 insertions(+), 22 deletions(-)

diff --git a/src/main/java/com/openisle/model/Comment.java b/src/main/java/com/openisle/model/Comment.java
index fe72ab446..5a1bdb5c0 100644
--- a/src/main/java/com/openisle/model/Comment.java
+++ b/src/main/java/com/openisle/model/Comment.java
@@ -4,6 +4,7 @@ import jakarta.persistence.*;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.Setter;
+import org.hibernate.annotations.CreationTimestamp;
 
 import java.time.LocalDateTime;
 
@@ -20,7 +21,9 @@ public class Comment {
     @Column(nullable = false, columnDefinition = "TEXT")
     private String content;
 
-    @Column(nullable = false)
+    @CreationTimestamp
+    @Column(nullable = false, updatable = false,
+            columnDefinition = "DATETIME(6) DEFAULT CURRENT_TIMESTAMP(6)")
     private LocalDateTime createdAt;
 
     @ManyToOne(fetch = FetchType.LAZY, optional = false)
@@ -35,8 +38,4 @@ public class Comment {
     @JoinColumn(name = "parent_id")
     private Comment parent;
 
-    @PrePersist
-    protected void onCreate() {
-        this.createdAt = LocalDateTime.now();
-    }
 }
diff --git a/src/main/java/com/openisle/model/Notification.java b/src/main/java/com/openisle/model/Notification.java
index ab9f004d2..d25c98c53 100644
--- a/src/main/java/com/openisle/model/Notification.java
+++ b/src/main/java/com/openisle/model/Notification.java
@@ -4,6 +4,7 @@ import jakarta.persistence.*;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.Setter;
+import org.hibernate.annotations.CreationTimestamp;
 
 import java.time.LocalDateTime;
 
@@ -42,11 +43,8 @@ public class Notification {
     @Column(name = "is_read", nullable = false)
     private boolean read = false;
 
-    @Column(nullable = false)
+    @CreationTimestamp
+    @Column(nullable = false, updatable = false,
+            columnDefinition = "DATETIME(6) DEFAULT CURRENT_TIMESTAMP(6)")
     private LocalDateTime createdAt;
-
-    @PrePersist
-    protected void onCreate() {
-        this.createdAt = LocalDateTime.now();
-    }
 }
diff --git a/src/main/java/com/openisle/model/Post.java b/src/main/java/com/openisle/model/Post.java
index 6e8ce8efd..9c3996207 100644
--- a/src/main/java/com/openisle/model/Post.java
+++ b/src/main/java/com/openisle/model/Post.java
@@ -4,6 +4,7 @@ import jakarta.persistence.*;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.Setter;
+import org.hibernate.annotations.CreationTimestamp;
 
 import java.util.HashSet;
 import java.util.Set;
@@ -32,7 +33,9 @@ public class Post {
     @Column(nullable = false, columnDefinition = "TEXT")
     private String content;
 
-    @Column(nullable = false)
+    @CreationTimestamp
+    @Column(nullable = false, updatable = false,
+            columnDefinition = "DATETIME(6) DEFAULT CURRENT_TIMESTAMP(6)")
     private LocalDateTime createdAt;
 
     @ManyToOne(optional = false, fetch = FetchType.LAZY)
@@ -56,8 +59,4 @@ public class Post {
     @Column(nullable = false)
     private PostStatus status = PostStatus.PUBLISHED;
 
-    @PrePersist
-    protected void onCreate() {
-        this.createdAt = LocalDateTime.now();
-    }
 }
diff --git a/src/main/java/com/openisle/model/User.java b/src/main/java/com/openisle/model/User.java
index 24b95021c..0d51ada45 100644
--- a/src/main/java/com/openisle/model/User.java
+++ b/src/main/java/com/openisle/model/User.java
@@ -4,6 +4,7 @@ import jakarta.persistence.*;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.Setter;
+import org.hibernate.annotations.CreationTimestamp;
 import java.time.LocalDateTime;
 
 import com.openisle.model.Role;
@@ -45,11 +46,8 @@ public class User {
     @Column(nullable = false)
     private Role role = Role.USER;
 
-    @Column(nullable = false)
+    @CreationTimestamp
+    @Column(nullable = false, updatable = false,
+            columnDefinition = "DATETIME(6) DEFAULT CURRENT_TIMESTAMP(6)")
     private LocalDateTime createdAt;
-
-    @PrePersist
-    protected void onCreate() {
-        this.createdAt = LocalDateTime.now();
-    }
 }