Yup, then like Marnen said, Person should belong to Item: belongs_to :item, :polymorphic => true
In your migration, you can use: t.references :item, :polymorphic => true Which will create item_type and item_id columns. Then each class A, B, and C can have one person: has_one :person, :as => :item -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.

