Rspec 错误 "undefined method " 新模型

Question

我创建了一个名为 SponsoredPost 的模型，具有 title:string, body:text and price:integer 个属性。这个新模型应该是我拥有的 Topic 模型的子模型。这是它的 Rspec：

RSpec.describe SponsoredPost, type: :model do
  let(:topic) {Topic.create!(name: RandomData.random_sentence,description: RandomData.random_paragraph)}
  let(:sponsored_post) { topic.sponsored_posts.create!(title: RandomData.random_sentence, body: RandomData.random_paragraph, price: 99) }
  it { should belong_to(:topic) }

  describe "attributes" do

    it "should respond  to title" do
      expect(sponsored_post).to respond_to(:title)
    end
    it "should respond to body" do
      expect(sponsored_post).to respond_to(:body)
    end
    it "should respond to price" do
      expect(sponsored_post).to respond_to(:price)
    end
  end
end

赞助商模特：

class SponsoredPost < ActiveRecord::Base
  belongs_to :topic
end

主题模型：

class Topic < ActiveRecord::Base
  has_many :posts
  has_many :sponsored_posts
  has_many :posts, dependent: :destroy
  has_many :sponsored_posts, dependent: :destroy
end

4 个测试中有 3 个失败并出现错误：

 undefined method `sponsored_posts' for #<Topic:0x007fde82176570>

我做错了什么？

Answer 1

undefined method `sponsored_posts' for Topic:0x007fde82176570

您也应该在 Topic 模型上设置关联

class Topic < ActiveRecord::Base
  has_many :sponsored_posts
end

更新：

您在 Topic 模型中有一个错字，如果您仔细观察，您将其定义为 sponsered_posts 而它应该是 sponsored_posts

Answer 2

您还必须在 Topic 模型中定义逆关系。

has_many :sponsored_posts

Rspec 错误 "undefined method " 新模型

Rspec error "undefined method " for new model

ruby

methods

rspec

ruby-on-rails

undefined