FactoryGirl：使用參數創建動態工廠？

Question

我有三個工廠，我想幹起來。他們看起來像這樣：

factory :sequenced_stamps_by_years, class: Stamp do 
    ... 
    sequence(:day_date) { |n| n.years.ago } 
end 

factory :sequenced_stamps_by_months, class: Stamp do 
    ... 
    sequence(:day_date) { |n| n.months.ago } 
end 

factory :sequenced_stamps_by_weeks, class: Stamp do 
    ... 
    sequence(:day_date) { |n| n.weeks.ago } 
end 

我該如何幹燥呢？我想要能夠創建他們這樣的事情：

FactoryGirl.create_list(:sequenced_stamps_by_x, 4, x: "weeks") ## <- So that i can decide whether I want weeks, days, years, or months ago. 

這可能嗎？

Answer 1

如果您不贊成繼承方式，則可以使用參數進行替代。基本上是：

factory :stamps do 
    ignore do 
    interval :years # possible values => :years, :months, :weeks 
    end 

    sequence(:date_date) { |n| n.send(interval).ago } 

    # rest of attributes here 
end 

現在你可以這樣做：

FactoryGirl.create(:stamps, :interval => :months) 

或

FactoryGirl.create(:stamps) 

默認爲年。

所有這些你可以在Factory Girl transient attributes

Answer 2

工廠可以從其他工廠繼承。因此，您可以執行如下操作：

factory :stamps do 
    # common attributes here 
    ..... 

    factory: sequenced_stamps_by_years do 
    sequence(:day_date) { |n| n.years.ago } 
    end 
    factory: sequenced_stamps_by_months do 
    sequence(:day_date) { |n| n.months.ago } 
    end 
    factory: sequenced_stamps_by_weeks do 
    sequence(:day_date) { |n| n.weeks.ago } 
    end 
end