禁用特征中的FactoryGirl关联 [英] Disabling a FactoryGirl association within a trait

问题描述

在Rails应用程序中，我正在使用FactoryGirl定义常规工厂以及其他一些特定特征.一般情况下，除了一个特征外，所有特征都有一个特定的关联，但我想定义一个不创建/构建该关联的特征.我可以使用after回调将关联的id设置为nil，但这不会阻止关联记录的创建.

In a Rails app, I'm using FactoryGirl to define a general factory plus several more specific traits. The general case and all but one of the traits have a particular association, but I'd like to define a trait where that association is not created/built. I can use an after callback to set the association's id to nil, but this doesn't stop the association record from being created in the first place.

特征定义中是否有一种方法可以完全禁用已为该特征所属的工厂定义的关联的创建/建立?

Is there a way in a trait definition to completely disable the creation/building of an association that has been defined for the factory the trait belongs to?

例如:

FactoryGirl.define do
  factory :foo do
    attribute "value"
    association :bar

    trait :one do
      # This has the bar association
    end

    trait :two do
      association :bar, turn_off_somehow: true
      # foos created with trait :two will have bar_id = nil
      # and an associated bar will never be created
    end
  end
end

推荐答案

factory_girl中的关联只是一个属性，就像其他属性一样.使用association :bar设置bar属性，因此可以通过用nil覆盖它来禁用它:

An association in factory_girl is just an attribute like any other. Using association :bar sets the bar attribute, so you can disable it by overriding it with nil:

FactoryGirl.define do
  factory :foo do
    attribute "value"
    association :bar

    trait :one do
      # This has the bar association
    end

    trait :two do
      bar nil
    end
  end
end

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