I have an entity looking like this:
public class Comment
{
public Guid Id { get; set; }
public DateTime PublishedDate { get; set; }
public string CommentText { get; set; }
public bool IsEdited { get; set; }
public bool IsDeleted { get; set; }
public ICollection<Comment> Replies { get; set; }
public int? ParentBlogId { get; set; }
[ForeignKey("ParentBlogId")]
public BlogPost ParentBlog { get; set; }
public Guid? ParentCommentId { get; set; }
[ForeignKey("ParentCommentId")]
public Comment ParentComment { get; set; }
public string UserId { get; set; }
[ForeignKey("UserId")]
public User User { get; set; }
}
Now as you see this contains an ICollection of the same type. So a comment can have multiple comments under it. When I want to load all these in a nice nested list I tried using this:
var comments = await _context.Comments
.Include(x => x.User)
.Include(x => x.Replies)
.ThenInclude(x => x.User).ToListAsync();
The problem is that this only loads 2 levels deep. So if I have a structure like this:
Comment
Comment
Comment
Comment
Comment
Comment
Comment
It will only load the first 2 levels:
Comment
Comment
Comment
Comment
Comment
How can I make it include all the replies of subreplies?
I did it by calling a recursive method:
public async Task<List<Comment>> GetAsync(int blogId)
{
var comments = await _context.Comments
.Include(x => x.User)
.OrderByDescending(x => x.PublishedDate)
.Where(x => x.ParentBlog.Id == blogId && !x.IsDeleted).ToListAsync();
comments = await GetRepliesAsync(comments);
return comments;
}
private async Task<List<Comment>> GetRepliesAsync(List<Comment> comments)
{
foreach (var comment in comments)
{
var replies = await GetFromParentIdAsync(comment.Id);
if (replies != null)
{
comment.Replies = await GetRepliesAsync(replies.ToList());
}
}
return comments;
}
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