使用FactoryGirl指定继承工厂的关联

Question

我刚开始使用FactoryGirl进行测试，而且我遇到了一些问题。

我有user，qualification和user_qualification型号。对于qualifications，我有两个继承的工厂，即qualification_ba和qualification_phd。现在，我试图通过运行来生成包含qualification_ba或qualification_phd工厂的资格认证：

create(:user_qualification_ba_bad_marks)。

返回：

NoMethodError: undefined method 'qualification_ba='。

然而，在跑步时：

create(:qualification_ba)

它按预期成功创建了对象。您可以在多大程度上嵌套工厂？

factory :user do
    to_create {|instance| instance.save(validate: false) }

    full_name               Faker::Name.name
    email                   Faker::Internet.email
    password                Faker::Internet.password(8)

    factory :user_ba_candidate do
        before(:create) do |user|
                create_list(:user_qualification_ba_bad_marks, 1, user: user)
        end
    end

    factory :user_phd_candidate do
        before(:create) do |user|
                create_list(:user_qualification_phd_good_marks, 1, user: user )
        end
    end

end
factory :qualification do
    user_selectable true
    factory :qualification_ba do
        name                    "Bachelors"
        qualification_level     2
    end
    factory :qualification_phd do
        name                    "Masters"
        qualification_level     5
    end
end

factory :user_qualification do
    to_create {|instance| instance.save(validate: false) }
    factory :user_qualification_ba_bad_marks do
        qualification_ba
        aggregate (30..50).to_a.sample
    end
    factory :user_qualification_phd_good_marks do
        qualification_phd
        aggregate (70..90).to_a.sample
    end
    user
end