在用户新注册时创建另一个模型 [英] Create another model upon user new registration in devise

问题描述

我正在使用 devise 进行新用户注册.创建新用户后，我还想为该用户创建一个配置文件.

I'm using devise to do the new user registration. Right after a new user is created, I would also like to create a profile for that user.

我在registrations_controller.rb中的create方法如下:

class RegistrationsController < Devise::RegistrationsController
    def create
      super
      session[:omniauth] = nil unless @user.new_record?

      # Every new user creates a default Profile automatically
      @profile = Profile.create
      @user.default_card = @profile.id
      @user.save

    end

但是，它不会创建新的个人资料，也不会填写@user.default_card 的字段.如何在每个新用户注册设备时自动创建新的个人资料?

But, it is not creating a new Profile and neither is the field for @user.default_card is being filled in. How can I create a new Profile automatically upon each new user registration with devise?

推荐答案

我会将此功能放入用户模型上的 before_create 回调函数中，因为它本质上是模型逻辑，只是不会添加另一个保存调用并且通常更优雅.

I would put this functionality into an before_create callback function on the user model since it is essentially model logic, would only not add another save call and is just generally more elegant.

您的代码不工作的一个可能原因是 @profile = Profile.create 没有成功执行，因为它没有通过验证或其他原因.这将导致 @profile.id 为 nil，因此 @user.default_card 为 nil.

One possible reason why your code is not working is that @profile = Profile.create is not executed successfully because it is failing validations or something. This would result in @profile.id being nil and thus @user.default_card is nil.

这是我将如何实现这一点:

Here is how I would implement this:

class User < ActiveRecord::Base

  ...

  before_create :create_profile

  def create_profile
    profile = Profile.create
    self.default_card = profile.id
    # Maybe check if profile gets created and raise an error 
    #  or provide some kind of error handling
  end
end

在您的代码(或我的)中，您始终可以放置一个简单的 puts 来检查是否正在创建新配置文件.即 puts (@profile = Profile.create)

In your code(or mine), you can always put a simple puts to check if the new profile is getting created. i.e. puts (@profile = Profile.create)

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