IS
@PostMapping("/posts/{postId}/comments")
public Comment createComment(@PathVariable (value = "postId") Long postId,
@Valid @RequestBody Comment comment) {
return postRepository.findById(postId).map(post -> {
comment.setPost(post);
return commentRepository.save(comment);
}).orElseThrow(() -> new ResourceNotFoundException("PostId " + postId + " not found"));
}
public Comment createComment(@PathVariable (value = "postId") Long postId,
@Valid @RequestBody Comment comment) {
return postRepository.findById(postId).map(post -> {
comment.setPost(post);
return commentRepository.save(comment);
}).orElseThrow(() -> new ResourceNotFoundException("PostId " + postId + " not found"));
}
вот кусок примера я не понимаю как работает поиск по йд
