Ruby on rails 3 通过使用factoryGirl，你有很多

我有以下型号：

class Application < ActiveRecord::Base
  has_many :admin_user_applications, dependent: :destroy
  has_many :admin_users, through: :admin_user_applications, :source => :user, validate: :false
end

class User < ActiveRecord::Base
  has_many :admin_user_applications, dependent: :destroy
  has_many :administrable_applications, through: :admin_user_applications, :source => :application
end

class UserApplication < ActiveRecord::Base
  belongs_to :user
  belongs_to :application
end

但当我这么做的时候：

app_3 = FactoryGirl.create(:application, admin_users: [@user])
puts @user.admin_user_applications.inspect  # =>[] 

它返回给我[]

我做错了什么？

试试看

@user.admin_user_applications << FactoryGirl.create(:application)

---

@user.admin\u user\u应用程序当然可以，但我正在尝试使用FactoryGirl找到方法
@user.admin_user_applications << FactoryGirl.create(:application)