在factory_girl中使用params从另一个特征中调用特征

Question

我有一个相当厚实的工厂女孩​​特质，接受参数并创建一个has_many关系。我可以将这种特性称为另一种特性的一部分，以便将特性干涸或者在将它们传递给工厂时更容易将特征捆绑在一起。我不知道怎么做的是当我从另一个特征中调用它时，或者该怎样做时，如何将params传递给一个特征。

EG

FactoryGirl.define do
  factory :currency do
    name Forgery::Currency.description
    sequence(:short_name) { |sn| "#{Forgery::Currency.code}#{sn}" }
    symbol '$'
  end

  factory :price do
    full_price { 6000 }
    discount_price { 3000 }
    currency
    subscription
  end

  sequence(:base_name) { |sn| "subscription_#{sn}" }

  factory :product do
    name { generate(:base_name) }
    type { "reading" }
    duration { 14 }


    trait :reading do
      type { "reading subscription" }
    end

    trait :maths do
      type { "maths subscription" }
    end

    trait :six_month do
      name { "six_month_" + generate(:base_name) }
      duration { 183 }
    end

    trait :twelve_month do
      name { "twelve_month_" + generate(:base_name) }
      duration { 365 }
    end

    factory :six_month_reading, traits: [:six_month, :reading]
    factory :twelve_month_reading, traits: [:twelve_month, :reading]

    trait :with_price do
      transient do
        full_price 6000
        discount_price 3000
        short_name 'AUD'
      end

      after(:create) do |product, evaluator|
        currency = Currency.find_by(short_name: evaluator.short_name) ||
                     create(:currency, short_name: evaluator.short_name)
        create_list(
          :price,
          1,
          product: product,
          currency: currency,
          full_price: evaluator.full_price,
          discount_price: evaluator.discount_price
        )
      end
    end

    trait :with_aud_price do
      with_price
    end

    trait :with_usd_price do
      with_price short_name: 'USD'
    end
  end
end

create(:product, :with_aud_price) # works
create(:product, :with_usd_price) # fails "NoMethodError: undefined method `with_price=' for #<Subscription:0x007f9b4f3abf50>"

# What I really want to do
factory :postage, parent: :product do
  with_aud_price full_price: 795
  with_usd_price full_price 700
end

Answer 1

:with_price特征需要与您设置的其他属性分开，即代替：

trait :with_usd_price do
  with_price short_name: 'USD'
end

用这个：

trait :with_usd_price do
  with_price
  short_name: 'USD'
end

Answer 2

我在factory_bot 4.8.2上，以下是对我有用的：

trait :with_usd_price do
  with_price
  short_name 'USD'
end