工厂女孩多重 has_many throughs

Question

我需要创建一些由多个组成的工厂

这是我的模型

Topic
  has_many :plan_topics
  has_many :plans, :through => :plan_topics

PlanTopic
  belongs_to :plan
  belongs_to :topic

Plan
  has_many :subscriptions
  has_many :members, :through => :subscriptions
  has_many :plan_topics
  has_many :topics, :through => :plan_topics

Subscription
  belongs_to :member
  belongs_to :plan

Member
  has_many :subscriptions
  has_many :plans, :through => :subscriptions

这是我所拥有的

Factory.define :topic do |topic|
  topic.name "Operations"
end

Factory.define :plan do |plan|
  plan.title "A test Finance plan"
  plan.price "200"
end

Factory.define :plan_topic do |plan_topic|
  plan_topic.topic {|topic| topic.association(:topic)}
  plan_topic.plan {|plan| plan.association(:plan)}
end

我想做的是这个 - Factory(:member_with_subscription)

Factory.define :member_with_subscription do |subscription|
  subscription.association(:plan_with_topic)
  subscription.association(:member)
end

有没有办法做到这一点？

Answer 1

考虑使用 after_build 回调来设置所有必需的依赖项。例如：

Factory.define :member_with_subscription, :class => 'Member' do |m|
  m.after_build do |member|
    member.subscriptions << Factory.build(:subscription)
  end
end

Answer 2

我的做法略有不同，这种方式可能更容易理解：

FactoryGirl.define do
  factory :member_with_description do
    after(:build) do |member|
      member.subscriptions << FactoryGirl.build(:subscription)
    end
  end 
end