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liwh/gist:900175

Created April 3, 2011 04:17
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这里记录mongo class的常见错误
Raw
gistfile1.txt
class Aa
include Mongoid::Document
embedded_in :Bb,:inverse_of => Aas
end
这是，我们不能直接调用Aa.first了，会报Exception: Mongoid::Errors::InvalidCollection，因为，我们不能直接调用一个embedded document的
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