Rails find through association
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by yogi
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Published on 2010-05-13T23:01:10Z
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2010/05/13
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rails
class Customer < ActiveRecord::Base
has_one :address, :foreign_key => "customerid"
end
class Address < ActiveRecord::Base
belongs_to :customer, :foreign_key => "customerid"
end
How do I find records in customer that do not have customerid in address table?
in SQL i'd do
select * from customer a, address b where a.customerid <> b.customerid
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