Rails - Dec 2005 - relationship help (not a personal problem)

Howdy all.  New to OO and Rails and trying to get a grip on both.

In particular at the moment I''m having trouble figuring out the 
following relationship.

Say I have table/class Foo.

Users get to decide to create Foo (or update or delete Foo) based on a 
user first proposing a change (class FooProposal), then users voting on 
that change (class FooProposalBallot).

I was thinking something like ...

class Foo < ActiveRecord::Base
  has_many :foo_proposals # Foo can be changed any # of times
  belongs_to :user # who proposed to create Foo in the first place
end

class FooProposal < ActiveRecord::Base
  has_many :foo_proposal_ballots # each user can vote on a proposal once
  belongs_to :user # who proposed the proposal

  belongs_to :foo
  # ^^^ this is where the majority of my confusion sets in
  # if the proposal is "modify" or "delete", this
relationship
  # is straight-forward; however if the proposal is "create"
I''m not
sure
  # if I should create Foo and set some flag that indicates Foo hasn''t
  # been approved yet

end

class FooProposalBallot < ActiveRecord::Base
  belongs_to :foo_proposal
  belongs_to :user
end

Any thoughts?

Thanks


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