Ruby on rails 创建与FactoryGirl的关联

我有一个

用户有许多：帐户，通过：：角色

和一个

用户有许多：拥有的帐户，通过：：所有者

，我在使用STI，其中

所有权

。我无法为

所有权

模型和

自有账户

关联编写工作工厂，我的测试失败

class User < ActiveRecord::Base
  has_many :roles
  has_many :accounts, through: :roles
  has_many :ownerships
  has_many :owned_accounts, through: :ownerships
end
class Account < ActiveRecord::Base
  has_many :roles
  has_many :users, through: :roles
end
class Role < ActiveRecord::Base
  belongs_to :users
  belongs_to :accounts
end
class Ownership < Role
end

我从这些测试开始，但我得到一个未初始化的常量错误，所有测试都失败了：

describe Ownership do
  let(:user)    { FactoryGirl.create(:user) }
  let(:account) { FactoryGirl.create(:owned_account) }
  before do
    @ownership = user.ownerships.build
    @ownership.account_id = account.id
  end
  subject { @ownership }
  it { should respond_to(:user_id) }
  it { should respond_to(:account_id) }
  it { should respond_to(:type) }
end

1) Ownership 
     Failure/Error: let(:account) { FactoryGirl.create(:owned_account) }
     NameError:
       uninitialized constant OwnedAccount
     # ./spec/models/ownership_spec.rb:17:in `block (2 levels) in <top (required)>'
     # ./spec/models/ownership_spec.rb:21:in `block (2 levels) in <top (required)>'

描述所有权
let（：user）{FactoryGirl.create（：user）}
let（：account）{FactoryGirl.create（：owned_account）}
在做之前
@所有权=user.ownerships.build
@ownership.account\u id=account.id
结束
主体{@ownership}
它{应该响应（：user_id）}
它{应该响应（：account\u id）}
它{应该响应（：type）}
结束
1） 所有权
失败/错误：let（：account）{FactoryGirl.create（：owned_account）}
名称错误：
未初始化常量OwnedAccount
#./spec/models/ownership_spec.rb:17:in'block（2层）in'
#./spec/models/ownership_spec.rb:21:in'block（2层）in'

错误消息是因为您需要指定父级，否则它将假定工厂定义是针对该名称的ActiveRecord类的

factory :owned_account, :parent => :account do
  name "ACME Corporation"
end

factory :owned_account, :parent => :account do
  name "ACME Corporation"
end