在factorygirl中设置实例变量

Question

说我有一个像这样的模特

class Vehicle < ActiveRecore::Base

  after_initialize :set_ivars

  def set_ivars
    @my_ivar = true
  end
end

我的代码中的其他地方我做的事情就像@ vehicle.instance_variable_set(:@ my_ivar,false)

然后使用此ivar确定运行哪些验证.

如何将这个Ivar传递给FactoryGirl？

 FactoryGirl.define do
   factory :vehicle do
      association1
      association2
   end
 end

在创建之后,如何在保存之前将ivar_set编码到上面？我如何将其传递给FactoryGirl.create()？

Answer 1

FactoryGirl.define do
   factory :vehicle do
      association1
      association2
      ignore do
        my_ivar true
      end

      after(:build) do |model, evaluator|
        model.instance_variable_set(:@my_ivar, evaluator.my_ivar)
      end
    end
 end

 FactoryGirl.create(:vehicle).my_ivar                    #=> true
 FactoryGirl.create(:vehicle, my_ivar: false).my_ivar    #=> false