ruby-on-rails - 如何使用 RSpec 测试具有嵌套属性的表单？

Question

我有一个 Invoice 模型，它可能包含许多 Items:

class Invoice < ActiveRecord::Base

  attr_accessible :number, :date, :recipient, :items_attributes

  belongs_to :user

  has_many :items

  accepts_nested_attributes_for :items, :reject_if => :all_blank, :allow_destroy => true

end

我正在尝试使用 RSpec 对此进行测试:

describe InvoicesController do

  describe 'user access' do

    before :each do
      @user = FactoryGirl.create(:user)
      @invoice = @user.invoices.create(FactoryGirl.attributes_for(:invoice))
      sign_in(@user)
    end

    it "renders the :show view" do
      get :show
      expect(response).to render_template :show
    end

  end

end

不幸的是，此测试(以及所有其他测试)失败并显示来自 RSpec 的错误消息:

Failure/Error: @invoice = @user.invoices.create(FactoryGirl.attributes_for(:invoice))
ActiveModel::MassAssignmentSecurity::Error:
Can't mass-assign protected attributes: items

如何创建包含将通过测试的项目的发票？

我正在使用 FactoryGirl 来制作这样的对象:

factory :invoice do
  number { Random.new.rand(0..1000000) }
  recipient { Faker::Name.name }
  date { Time.now.to_date }
  association :user
  items { |i| [i.association(:item)] } 
end

factory :item do
  date { Time.now.to_date }
  description { Faker::Lorem.sentences(1) }
  price 50
  quantity 2
end

Answer 1

-要在您的示例中使用嵌套属性，您需要传入“item_attributes”而不是像您当前正在执行的“items”。

我对 FactoryGirl 不是很流利，但也许按照这些思路行事？ :

invoice_attributes = FactoryGirl.attributes_for(:invoice)
invoice_attributes["item_attributes"] = invoice_attributes["items"]
invoice_attributes["items"] = nil
@invoice = @user.invoices.create(invoice_attributes)

s 应该模拟从您的表单传入的参数。