64. 댓글 삭제

View 확인

2. 권한부여하기

    @Transient
    private boolean isReplyOwner;

BoardJPARepository

    public Board 글상세보기(int boardId, User sessionUser) {
        Board board = boardJPARepository.findByIdJoinUser(boardId)
                .orElseThrow(() -> new Exception404("게시글을 찾을 수 없습니다"));

        boolean isBoardOwner = false;
        if (sessionUser != null) {
            if (sessionUser.getId() == board.getUser().getId()) {
                isBoardOwner = true;
            }
        }

        board.setBoardOwner(isBoardOwner);

        board.getReplies().forEach(reply ->{
            boolean isReplyOwner = false ;
            if(sessionUser!=null) {
                if (reply.getUser().getId() == sessionUser.getId()) {
                    isReplyOwner =true;
                }
            }
            reply.setReplyOwner(isReplyOwner);
        });

        return board;
    }

view

      {{#isReplyOwner}}
            <form action="/reply/{{id}}/delete" method="post">
               <button class="btn">🗑</button>
            </form>
       {{/isReplyOwner}}

3. 댓글 삭제하기

ReplyController

@PostMapping("/board/{boardId}/reply/{replyId}/delete")
public String delete(@PathVariable Integer boardId, @PathVariable Integer replyId){ //컨트롤러에 책임은 인증체크 나머지는 서비스로
    User sessionUser = (User) session.getAttribute("sessionUser");
    replyService.댓글삭제(replyId, sessionUser.getId());
    return "redirect:/board/"+boardId;
}

ReplyService

@Transactional
    public void 댓글삭제(int replyId, int sessionUserId) {
        Reply reply = replyJPARepository.findById(replyId)
                .orElseThrow(() -> new Exception404("없는 댓글을 삭제할 수 없어요"));

        if(reply.getUser().getId() != sessionUserId){
            throw new Exception403("댓글을 삭제할 권한이 없어요");
        }

        replyJPARepository.deleteById(replyId);
    }