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keeran/gist:65757

Created February 17, 2009 14:25
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gistfile1.rb
class Item
include DataMapper::Resource
has n, :cat_as, :through => Resource
has n, :cat_bs, :through => Resource
end
class CatA
include DataMapper::Resource
has n, :items, :through => Resource
end
class CatB
include DataMapper::Resource
has n, :items, :through => Resource
end
# need to find all items for a given CatA & CatB id
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