工厂/rspec2场景中未定义的方法“each”

我想制造一个与投票有关的帖子。以便投票后将生成与其关联的投票。

Factory.define :voted_post, :parent => :post, :class => Post do |p|
  p.association :votes, :factory => :vote
end

我的rspec2相对简单:

describe "vote scores" do
  it "should show me the total vote score" do
    @post = Factory(:voted_post)
    @post.vote_score.should == 1
  end
end

Failures:
   1) Post vote scores should show me the total vote score
     Failure/Error: @post = Factory(:voted_post)
     undefined method `each' for #<Vote:0x105819948>

ruby 1.8.7(2009-06-12 patchlevel 174)[通用达尔文10.0]

轨道3.0.0