Ruby on Rails 模型关系

发布于 2024-12-11 12:17:20 字数 823 浏览 0 评论 0原文

需要一些建议。我正在做一个关于 RoR 的项目，不确定应该使用模型之间的关系。我有三个模型 - 用户、论坛和消息。开头非常简单：用户有一面墙，它属于用户，所以我想这应该是：

class User < ActiveRecord::Base
  has_one :board
end

class Board < ActiveRecord::Base
    belongs_to :user
end

最后一个模型是消息，这就是我的问题。消息属于用户，因为他写了它，但它也属于墙，因为他把它写在墙上（并且它可以是属于其他用户的墙）。

我使用了简单的解决方案：

class Theme < ActiveRecord::Base
    belongs_to :board
    belongs_to :user
end

class User < ActiveRecord::Base
      has_one :board
      has_many :themes
end

class Board < ActiveRecord::Base
      belongs_to :user
      has_many :themes
end

但我对它不满意，觉得它不完美。我正在寻找一个解决方案，让我可以这样写：（

user.themes.create(:board => @board)

现在它不填充 user_id 字段）

我希望对于那些在 Ruby on Rails 模型方面比我更有经验的人来说这不是一项艰巨的任务。我会很感激好的建议，谢谢。

原文

need some advice.
I'm doing a project on RoR, and do not sure what relationship between the models should I use. I've got three models - Users, Boards and Messages.
The beginning is pretty simple:
User has one Wall, and it belongs to the User, so I guess this should be:

class User < ActiveRecord::Base
  has_one :board
end

class Board < ActiveRecord::Base
    belongs_to :user
end

The last model is Messages and here comes my problem. Message belongs to User cause he writes it, but it also belongs to a Wall cause he writes it on a wall (and it can be Wall that belongs to other user).

I used the simple solution:

class Theme < ActiveRecord::Base
    belongs_to :board
    belongs_to :user
end

class User < ActiveRecord::Base
      has_one :board
      has_many :themes
end

class Board < ActiveRecord::Base
      belongs_to :user
      has_many :themes
end

But I not satisfy with it, and feel that it isn't perfect. I'm looking for a solution that will let me write thinks like:

user.themes.create(:board => @board)

(now it doesn't fill user_id field)

I hope that isn't a hard task for those who more experienced than me in Ruby on Rails model. I'll appreciate good advices, thanks.

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晒暮凉 2024-12-18 12:17:20

一般情况下，您可以使用一些诸如认证宝石之类的设备。然后您就有了 current_user 变量，其中包含当前正在调用该操作的用户的对象。

然后，当用户创建主题时，您可以向控制器添加一行简单的行来设置用户：

@theme.user = current_user

您还应该使用像 cancan 这样的 gem 来管理中央文件中的授权。您可以在这里找到railscast：

http://railscasts.com/episodes/192-authorization-with -康康舞

For normal you use some authentification gem like devise. Then you have the current_user variable which includes the object of the user that is currently calling the action.

Then when a user creates the Topic you add one simple line to the controller to set the user: