NameError：RSpec上的未初始化常量

Question

我的UserTrainingController中有以下內容

  def create
   @user_training_resource = UserTrainingResource::Create.call(user_training_resource_params)
   respond_with(@user_training_resource)
 end

然后在“操作”>“培訓資源”>“創建”中

class UserTrainingResource
 class Create < Operation

   def call(params)
     user_training_resource = UserTrainingResource.new(params)
     ResourceMailer.requested(user_training_resource).deliver_later if user_training_resource.save
     user_training_resource
   end

 end
end

然后在我的測試中

 require 'rails_helper'

 RSpec.describe UserTrainingResource::Create do

  let(:params) { attributes_for(:user_training_resource) }

  describe '#call' do
    it 'saves the request as pending' do
      ut = UserTrainingResource::Create.call(params)
      expect(ut.persisted?).to eq(true)
    end

    it 'queues a mailer' do
      expect(ResourceMailer).to send_mail(:requested)
      UserTrainingResource::Create.call(params)
    end
  end

end

測試給了我

NameError：未初始化的常量UserTrainingResource :: Create

我不知道問題是什么。 它不能正確執行我的操作嗎？

Answer 1

Rails希望在app/models/user_training_resource/create.rb定義app/models/user_training_resource/create.rb ，或者可以將目錄添加到config.autoload_paths 。

https://blog.bigbinary.com/2015/11/05/how-constant-lookup-happens-in-rails.html

Answer 2

文件結構必須與類的名稱匹配。 將目錄重命名為app/models/user_training_resource/create.rb或lib/user_training_resource/create.rb

Answer 3

您應該這樣使用module ：

module UserTrainingResource
  class Create < Operation
    ...
  end
end

還是這樣的簡寫方式：

class UserTrainingResource::Create < Operation
end