Rails core - Jan 2014 - Feature Request - Method to differentiate between a NullRelation and Actual Relation ?

Hey,

 I am passing a relation to a method. When the relation has been called 
with the *none *method, I want to do something else than usual flow. This 
is what I have to detect the NullRelation:
> User.where(id:
1).extending_values.include?(ActiveRecord::NullRelation)=> false
> User.where(id:
1).none.extending_values.include?(ActiveRecord::NullRelation)=> true
Can we have a method on ActiveRecord::Base or any other suitable module, 
which can tell me if the relation is null without the above hack ?

Thanks,
Shadab

P.S. My first post in this email chain. Feel free to ridicule me if i broke 
any rules

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