Hi
I'm using Mongoid and Rails 3, and I want to serialize one of my mongoid documents to json for publishing via a controller, e.g.
class ReportController < ApplicationController respond_to :json
def show report = Report.where(:report_id => params[:id]).first respond_with report end end
This works ok, but pushes out every attribute on the document including the "internal" mongodb document id, e.g. :
{ _id: 54857324987546, // internal mongoid document id report_field_a: 1, report_field_b: 2, etc }
I would like to strip this when serializing the report to json, and I would also like any embedded documents to have their _id properties excluded too. I have searched for info on as_json, to_json etc but I'm not sure which is the best practice approach. The closest I can get is:
class Report include Mongoid::Document ... def as_json(options = {}) serializable_hash({ :except => :_id }.merge(options)) end end
...and then I need to copy that same as_json definition onto embedded document definitions too. Is this the rails 3 way of doing serialization customization?
I tried defining as_json as:
def as_json(options = {}) super({ :except => :_id }.merge(options)) end
but that doesn't return a hash as I was expecting, it seems to return the document itself. I'm not entirely sure what's happening there.
Any pointers are greatfully received!
Cheers Lee
