defaults for to_json in Rails with :include

Question

Let us say I have a model Post which belongs to a User. To convert to json, I do something like this

@reply.to_json(:include => {:user => {:only =>         


        

Answer 1

You can do this by overriding serializable_hash in your model, like so:

class Reply < ActiveRecord::Base
  def serializable_hash(options={})
    options = { 
      :include => {:user => {:only => [:email, :id]}, 
      :only => [:title, :id]
    }.update(options)
    super(options)
  end
end

This will affect all serializable methods, including serializable_hash, to_json, and to_xml.