ruby-on-rails - FactoryGirl 中的 find_or_initialize_by

Question

我想知道 FactoryGirl 中是否有与 find_or_initialize_by 等效的方法来解决以下问题:

目标是该模型使用具有相同国家/地区的两个表。我不想为国家使用序列(正如我为电子邮件找到的那样)。

Country 有一个唯一性约束，但我的主要问题是当我调用一次 FactoryGirl.create(:click) 时，它会创建两次相同的 Country 记录

因此，验证在测试中失败。

R规范:

# models/click_spec.rb
describe Click do
    it "should have a valid constructor" do
        FactoryGirl.create(:click).should be_valid
    end
end

工厂:

# factories/countries.rb
FactoryGirl.define do
    factory :country do
        name "United States"
        slug "us"
    end
end

# factories/offers.rb
FactoryGirl.define do
    factory :offer do
        association :country, factory: :country
        # Other columns
    end
end

# factories/users.rb
FactoryGirl.define do
    factory :user do
        association :country, factory: :country
        # Other columns
    end
end

# factories/clicks.rb
FactoryGirl.define do
    factory :click do
        association :offer, factory: :offer
        association :user, factory: :user
        # Other columns
    end
end

型号:

class Country < ActiveRecord::Base
    validates :name, :slug,
    presence: true,
    uniqueness: { case_sensitive: false }

    validates :slug,
    length: { is: 2 }

end

Answer 1

你应该能够通过使用 initialize_with 来完成这项工作:

FactoryGirl.define do
  factory :country do
    name "United States"
    slug "us"
    initialize_with { Country.find_or_create_by_name(name) }
  end
end

这将始终使用同一个国家。您可能希望嵌套工厂以允许其他工厂使用不同的名称:

FactoryGirl.define do
  factory :country do
    initialize_with { Country.find_or_create_by_name(name) }
    factory :united_states do
      name "United States"
      slug "us"
    end
  end
end