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2008 Feb 11
1
STI question
...In my application, a message may be written by a user or by a guest.
Thus a writer of a message is virtually associated either to a user or a
guest.
class Message < ActiveRecord::Base
end
class UserMessage < Message
belongs_to :writer, :class_name => ''User''
end
class GuestMessage < Message
belongs_to :writer, :class_name => ''Guest''
end
When I retrieve a list of messages, I want to include writer association
for performance.
messages = Message.find :all, :include => [:writer] # This doesn''t work.
How can I make the above code work?
If...