search for: replacement_id

...ionships between two objects of a model, where one of the objects replaces the other. I want to be able to tell if one object has been replaced and, if so, by what object; and vice versa what object an object replaces, if any. My idea was the following: create_table :events do |t| t.column :replacement_id, :integer t.column :description, :text, :null => false end create_table :replacements, {:id => false} do |t| t.column :original_id, :integer, :null => false t.column :new_id, :integer, :null => false t.column :date, :date, :null => false end Is this a reasonable model and,...