rspec - 工厂女孩有_many通过协会

Question

我正在关注这里接受的答案 Factory Girl: How to setup a has_many/through association

我有一个 has_many 通过关联

class Therapist < ActiveRecord::Base

has_many :clients, dependent: :destroy
has_many :courses, through: :clients

关于我的工厂女孩​​代码

FactoryGirl.define do
  factory :therapist do
    sequence(:first_name) { |n| "John#{n}" }
    sequence(:last_name)  { |n| "Smith#{n}" }

    factory :therapist_with_course do
      after(:create) { |therapist| therapist.courses <<  FactoryGirl.create(:course) }
     end
   end
 end

类(class)工厂

FactoryGirl.define do
  factory :course do
    client
  end
end

当我运行测试时，出现以下错误

Failure/Error: let(:therapist) { create :therapist_with_course }
 ActiveRecord::HasManyThroughCantAssociateThroughHasOneOrManyReflection:
   Cannot modify association 'Therapist#courses' because the source reflection class 'Course' is associated to 'Client' via :has_many.

Answer 1

首先应该创建 therapist 工厂，在创建 therapist 完成后，您将追加类(class)工厂。在你的情况下，你 factory :therapist_with_course 没有关于 therapist

的信息

FactoryGirl.define do
   factory :therapist do
      # The therapist attributes here
      after(:create) { |therapist| therapist.courses << FactoryGirl.create(:course) }
   end
end