개인과제 글 수정 기능 구현

package com.sparta.blog.entity;

import com.sparta.blog.dto.PostRequestDto;
import jakarta.persistence.*;
import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.Setter;


@Entity
@Getter
@Setter
@NoArgsConstructor
@Table(name = "posts")
public class Post extends Timestamped {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @Column(nullable = false)
    private String title;

    @Column(nullable = false)
    private String content;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "user_id", nullable = false)
    private User user;


    public Post(PostRequestDto postRequestDto, User user) {
        this.title = postRequestDto.getTitle();
        this.content = postRequestDto.getContent();
        this.user = user;
    }
}

package com.sparta.blog.entity;

import jakarta.persistence.*;
import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.Setter;

import java.util.ArrayList;
import java.util.List;

@Entity
@Getter
@Setter
@NoArgsConstructor
@Table(name="users")
public class User {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @Column(nullable = false, unique = true)
    private String username;
    @Column(nullable = false)
    private String password;

    @Column(nullable = false)
    @Enumerated(value = EnumType.STRING)
    private UserRoleEnum role;

    @OneToMany(mappedBy = "user")
    private List<Post> postList = new ArrayList<>();

    public User(String username, String password, UserRoleEnum role) {
        this.username = username;
        this.password = password;
        this.role = role;
    }
}

   @PutMapping("/post/{id}")
    public PostResponseDto updatePost(@PathVariable Long id, @RequestBody PostRequestDto requestDto, @AuthenticationPrincipal UserDetailsImpl userDetails) {
        return postService.updatePost(id, requestDto, userDetails.getUser());
    }

    @Transactional
    public PostResponseDto updatePost(Long id, PostRequestDto requestDto, User user) {
        Post post = findPost(id);
        if (!post.getUser().getId().equals(user.getId())) {
            throw new IllegalArgumentException("다른 회원의 글은 수정할 수 없습니다.");
        } else {
            post.setTitle(requestDto.getTitle());
            post.setContent(requestDto.getContent());
            postRepository.save(post);
        }
        return new PostResponseDto(post);
    }

user entity의 postList도 업데이트 되도록 수정할 예정