FactoryGirl - NoMethodError：未定义的方法`votes_count ='for＃<pollitem：0xbd2c4814>

Question

我有两个模型，Poll和PollItem。我创建了这个模型工厂的测试：

我添加了下一个工厂：

工厂/ polls.rb

public CustonControl()
{
    Loaded += HookToCtrlC;
}

private void HookToCtrlC(object sender, EventArgs e)
{
    var parentWindow = Window.GetWindow(this);
    parentWindow.KeyDown += CopySelectedTextToClipboard;
}

private void CopyMarkedNucleotidesToClipboard(object sender, KeyEventArgs e)
{
    Clipboard.SetText("Hello World!");
}

工厂/ poll_items.rb ：

FactoryGirl.define do
    factory :poll do

        question "What programming language are you using?"
        results_hidden 1
        from_date "2015-06-25 18:13:18"
        to_date "2015-07-25 18:13:18"

        trait :poll_item1 do
          association :poll_item,
          answer: "C#",
          votes_count: "1"
        end

        trait :poll_item2 do
          association :poll_item,
          answer: "Ruby",
          votes_count: "2"
        end
    end

  end

我运行我的规范测试：

FactoryGirl.define do 
    factory :poll_item do
      answer "MyString"
      votes_count "1"
    end
end

运行i test时，显示错误 - NoMethodError：未定义方法`votes_count ='表示＃./spec/models/poll_spec.rb:5:in