以下工厂无效，FactoryGirl名称为model

Question

我有这个模型

   FactoryGirl.define do
      factory :upload, class: Upload do
        before :create do |upload|
         create(:user_2) 
        end
      end
    end

用户工厂：

FactoryGirl.define do
  factory :user do
    first_name            "John"
    password              "1234567890"
    factory :user_2 do
      initialize_with {
          User.where(id: 2).first_or_create(
            id: 2,
            first_name:            "John",
            password:              "1234567890",
          )
      }
    end
  end
end

这就是错误：

/home/developer/.rbenv/versions/2.1.3/lib/ruby/gems/2.1.0/gems/factory_girl-4.4.0/lib/factory_girl.rb:73:in `lint': The following factories are invalid: (FactoryGirl::InvalidFactoryError)  *upload

我不知道这个错误发生了什么

（更新） 我解决了它，我在需要时直接创建了Upload对象：

@upload = Upload.create(fund_source: @fund_source, user: build(:user), status: 'uploaded',  
file: fixture_file_upload('files/HennesseeHedgeFundIndices_UnitTest.xlsx', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'))