mongoid繼承問題

Question

我有這樣

class Canvas 
    include Mongoid::Document 
    field :name 
    referenced_in :hero 
end 

class Browser < Canvas 
    field :version, :type => Integer 
end 

class Hero 
    include Mongoid::Document 
    field :name 
    references_many :canvases 
end 

如何建立從英雄對象refered布勞爾對象模型。

所有我想要做的就是

h = Hero.create!({:name => 'Aston'}) 
h.browsers.build 

但是它給了我一個錯誤

undefined method `browsers' for #<Hero _id: 4d92c8fc1426960fff000005, name: "Aston"> 

我這麼想嗎？

感謝

Answer 1

試試這個

h.canvases.build({},Browser) 

這個工程的mongoid.2.0.0.rc7