Has_one with :source_type

rubyonrails-talk
1

I am trying to extend the classic example

class Magazine < ActiveRecord::Base        has_many :subscriptions

       has_many :rental_events ,             :through => : subscriptions,             :source => :redaer,             :source_type => 'Business'

      has_many :closing_events ,             :through => : subscriptions,             :source => :reader,             :source_type => 'Person' end

class Subscription < ActiveRecord::Base   belongs_to :magazine   belongs_to :reader, :polymorphic => true end

class Business < ActiveRecord::Base     has_many : subscriptions, :as => :reader     has_one :magazine, :through => :subcription <---- that's what I want , only 1 magazine....   end

class Person < ActiveRecord::Base     has_many : subscriptions, :as => :reader     has_one :magazine, :through => :subcription <---- that's what I want , only 1 magazine.... end

I can easily get Person.first.subscriptions, but I cannot get Person.first.magazine or Business.first.magazine

what's wrong ? , thanks for your lights ..

erwin