Rails 4:有一个代理模型来组合多个模型 [英] Rails 4: having a proxy model to combine multiple models

问题描述

我正在尝试使用导轨 (4).我之前做过一些 Sinatra.

I am trying my hand on rails (4). I have done some Sinatra earlier.

我有一个注册表单，用户可以在其中填写他的组织名称、地址和他自己的姓名、密码等.我有两个表 - 用户和组织，这些表填充了注册数据.所以，我有两个活动记录模型 users 和 organizations.我的控制器如下所示:

I have a signup form, in which user can fill out his organization name, address and his own name, password etc. I have two tables - Users and Organizations, those table get populated with Signup data. So, I have two active records model users and organizations. My controllers looks as follows:

class SignupsController < ApplicationController

  # GET /signup
  def new
    # show html form
  end

  # POST /signup
  def create
    @signup = Registration.register(signup_params)
    respond_to do |format|
      if @signup.save
        format.html { redirect_to @signup, notice: 'Signup was successfully created.' }
      else
        format.html { render action: 'new' }
      end
    end
  end

  private
    # Never trust parameters from the scary internet, only allow the white list through.
    def signup_params
      params[:signup]
    end
end

我没有任何 Registration 模型(数据库表).我正在寻找这样的 Registration 模型(我应该称其为模型吗?)在那里我可以有类似的东西:

I do not have any Registration model (table in db). What I am looking for such Registration model (should I call it model?) where I can have something like:

class Registration
  def self.register params
    o = Organization.new params
    u = User.new o.id, params
    self.send_welcome_email params[:email]
  end

  def send_welcome_email email
    #send email here
  end
end

1) 那么我应该在哪里保存这个 Registration 类?

1) So where should I keep this Registration class?

2) 对于这种情况，这是正确的方法吗?如果没有，那么最好的方法是什么?

2) Is this a correct approach for such situation? If not, then what is the best way to do it?

3) 拥有这样的类会影响运行任何单元测试吗?

3) Having such class will effect running any unit tests?

4) 我看到有文件，signup_helper.rb 在 SignupsController 中有什么用

4) I see there is file, signup_helper.rb what is the use of that in SignupsController

推荐答案

你可以在你的模型中做 include ActiveModel::Model ，它会像一个普通的 Model 一样工作.您将能够进行验证、回调.除了持久化到数据库之外的任何事情.

You can do include ActiveModel::Model in your model, and it will behave as a normal Model. You will be able to do validations, callbacks. Anything other than persisting to a database.

看看这个 了解更多信息.

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