닉네임 변경 로그 엔티티 - updated_at 제거

src/main/kotlin/kr/co/vividnext/sodalive/member/nickname/NicknameChangeLog.kt

@@ -1,15 +1,30 @@
 package kr.co.vividnext.sodalive.member.nickname
 
-import kr.co.vividnext.sodalive.common.BaseEntity
 import kr.co.vividnext.sodalive.member.Member
+import java.time.LocalDateTime
 import javax.persistence.Entity
 import javax.persistence.FetchType
+import javax.persistence.GeneratedValue
+import javax.persistence.GenerationType
+import javax.persistence.Id
 import javax.persistence.JoinColumn
 import javax.persistence.ManyToOne
+import javax.persistence.PrePersist
 
 @Entity
-data class NicknameChangeLog(val prevNickname: String) : BaseEntity() {
+data class NicknameChangeLog(
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    var id: Long? = null,
+    val prevNickname: String,
+    var createdAt: LocalDateTime? = null
+) {
     @ManyToOne(fetch = FetchType.LAZY)
     @JoinColumn(name = "member_id", nullable = false)
     var member: Member? = null
+
+    @PrePersist
+    fun prePersist() {
+        createdAt = LocalDateTime.now()
+    }
 }