不同用户类型的Ruby on Rails [英] Ruby on rails with different user types

问题描述

我正在尝试构建一个具有不同类型用户的应用程序，我正在使用authlogic进行用户身份验证.

I'm trying to build a application that has different kinds of users, I'm using authlogic for user authentication.

因此，我有一个用户模型，该模型具有authlogic进行魔术的必填字段.现在，我想添加几个不同的模型，这些模型将描述针对不同类型用户的额外字段.

So I have one user model that has the required field for authlogic to do its magic. I now want to add a couple of different models that would describe the extra fields for the different kinds of users.

让我们说一个用户注册后，他将选择他的用户类型，完成注册后，他将能够添加特定于他的用户模型的信息.

Lets say that a user registers, he would then select his user type, when he is done registering he would be able to add information that is specific for his user model.

做到这一点的最佳方法是什么?我目前正在研究多态模型，但是我不确定这是最好的方法.任何帮助将不胜感激，谢谢.

What would be the best way to do this? I am currently looking into polymorphic models but I'm not sure that's the best route to take. Any help would be greatly appreciated, thanks.

推荐答案

您可以创建不同的profile表，只需将配置文件与用户绑定即可.因此，对于每种用户类型，您可以创建一个表并在其中存储特定信息，并具有一个user_id列以指向users.

You can create different profile tables and just tie the profile to the user. So for each user type you can create a table and store the specific info there and have a user_id column to point back to users.

class User < ActiveRecord::Base
  has_one :type_1
  has_one :type_2
end

class Type1 < ActiveRecord::Base
  belongs_to :user
end

class Type2 < ActiveRecord::Base
  belongs_to :user
end

现在这不是很干，如果您不断添加用户类型，可能会导致问题.因此，您可以研究多态性.

Now this isn't very DRY and could lead to problems if you are constantly adding user types. So you could look into polymorphism.

对于多态，users表将定义用户是什么类型(profileable_id和profileable_type).像这样:

For polymorphism, the users table would define what type the user is (profileable_id and profileable_type). So something like this:

class User < ActiveRecord::Base
  belongs_to :profileable, :polymorphic => true
end

class Type1 < ActiveRecord::Base
  has_one :user, :as => :profileable
end

class Type2 < ActiveRecord::Base
  has_one :user, :as => :profileable
end

然后为用户类型提供STI(单表继承)的第三个选项.但是，如果用户类型字段之间的差异很大，那么扩展就不会很好.

Then there is a third option of STI (single table inheritance) for the user types. But that doesn't scale well if the user type fields differ dramatically.

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