[fix] 회원 탈퇴 -> 유저 삭제시 Post 삭제 기준을 Route기반으로 변경해서 FK 오류 해결

Author: dltnals317

src/main/java/org/sopt/pawkey/backendapi/domain/post/domain/repository/PostRepository.java

@@ -27,4 +27,6 @@ public interface PostRepository {
 	List<PostEntity> findAllByRouteIds(List<Long> routeIds);
 
 	void deleteByUserId(Long userId);
+
+	void deleteByRouteUserId(Long userId);
 }

src/main/java/org/sopt/pawkey/backendapi/domain/post/infra/persistence/repository/PostRepositoryImpl.java

@@ -69,4 +69,9 @@ public void deleteByUserId(Long userId) {
 		jpaRepository.deleteByUser_UserId(userId);
 	}
 
+	@Override
+	public void deleteByRouteUserId(Long userId) {
+		jpaRepository.deleteByRouteUserId(userId);
+	}
+
 }

src/main/java/org/sopt/pawkey/backendapi/domain/post/infra/persistence/repository/SpringDataPostRepository.java

@@ -66,4 +66,13 @@ public interface SpringDataPostRepository extends JpaRepository<PostEntity, Long
 
 	@Modifying(clearAutomatically = true)
 	void deleteByUser_UserId(Long userId);
+
+	@Modifying
+	@Query("""
+		delete from PostEntity p
+		where p.route.user.userId = :userId
+	""")
+	void deleteByRouteUserId(Long userId);
+
+
 }

src/main/java/org/sopt/pawkey/backendapi/domain/user/application/service/UserDeletionService.java

@@ -34,7 +34,7 @@ public void deleteUser(Long userId) {
 
 
 		//연관 테이블 삭제
-		postRepository.deleteByUserId(userId);
+		postRepository.deleteByRouteUserId(userId);
 		routeRepository.deleteByUserId(userId); //post와 route는 cascade설정시, 대량 Lazy Loading이 발생할 수 있어서, service단에서 처리(나머지 pet,review,postlike연관관계는 userEntity에서 casecade로 처리합니다)