Disable lazy loading ?

Hi,

I have 2 active records with has_one/belongs_to association between them.

class Story < ActiveRecord::Base   belongs_to :conclusion end

class Conclusion < ActiveRecord::Base   has_one :story end

Sometimes I fetch a conclusion with story in eager loading, sometimes I don't fetch the associated story.

I want to know when the associated story is fetched or not conclusion.story.loaded? doesn't work.

Another question : how to completely disable lazy loading ? In order to be able ton simply do : conclusion.story == nil.

Thanks for your answers.