to_json not working because reflections are wrong

Question

I have a class called Foo that looks like this:

class Foo < ActiveRecord::Base 
  belongs_to othermodel 
end 

and a class Bar that looks like this:

class Bar  < Foo 
   belongs_to thirdmodel
end 

When i try to serialize bar with : bar.first.to_json(:include => :othermodel), it fails in production mode. Strangely it works in the development environment. I digged around and found that the bar.first.class.reflections.keys only includes "thirdmodel" and not "othermodel" in production mode.

I can't explain that, in rails 2 and in the development environment it works prefect.

The error is :

NoMethodError: undefined method `macro' for nil:NilClass
   from ~/.rvm/gems/ruby-1.9.2-p0/gems/activerecord-3.0.0/lib/active_record/serialization.rb:41:in `block in serializable_add_includes'

Answer 1

The Problem was Thinking Sphinx. Removed it and replaced it with own solution and now it works perfectly.