🗃️BaseEntity activation

#1

src/main/kotlin/nexters/weski/WeskiApplication.kt

@@ -2,8 +2,10 @@ package nexters.weski
 
 import org.springframework.boot.autoconfigure.SpringBootApplication
 import org.springframework.boot.runApplication
+import org.springframework.data.jpa.repository.config.EnableJpaAuditing
 
 @SpringBootApplication
+@EnableJpaAuditing
 class WeskiApplication
 
 fun main(args: Array<String>) {

src/main/kotlin/nexters/weski/common/BaseEntity.kt

@@ -0,0 +1,21 @@
+package nexters.weski.common
+
+import jakarta.persistence.*
+import org.springframework.data.annotation.CreatedDate
+import org.springframework.data.annotation.LastModifiedDate
+import org.springframework.data.jpa.domain.support.AuditingEntityListener
+import java.time.LocalDateTime
+
+@MappedSuperclass
+@EntityListeners(AuditingEntityListener::class)
+abstract class BaseEntity {
+
+    @CreatedDate
+    @Column(updatable = false)
+    var createdAt: LocalDateTime? = null
+        private set
+
+    @LastModifiedDate
+    var updatedAt: LocalDateTime? = null
+        private set
+}