Question

I have in model post.rb:

class Post
 include Mongoid::Document
 attr_accessible :content, :original_post
end

in create action in posts_controller.rb:

def create
 @post = Post.new(params[:post])
 @post.original_post = @post
 @post.save
end

I want to know that this post is the original because I will do copy of this post and I will have more post with the same features.

However when I try create the post, I get the error:

BSON::InvalidDocument (Cannot serialize an object of class Post into BSON.):

Answer 1

Have you tried to serialize empty Post, like:

@post = Post.new(params[:post])
@post.save

May be the problem is that @post contains itself as variable. And it cannot be serialized to json (bson).