对用户之间的消息建模

发布于 2024-07-10 23:27:12 字数 746 浏览 8 评论 0原文

我想对用户之间的消息进行建模，要求如下：

用户已接收和发送消息，并且应该由user.received_messages和user.sent_messages检索< /p>
消息有发送者和接收者，应通过message.sender 和 message.receiver。

我已将用户模型创建为：

script/generate model User name:string

并将消息模型创建为：

script/generate model Message content:text sender_id:integer receiver_id:integer

我想出了如下所示的消息，它按预期工作，

class Message < ActiveRecord::Base
    belongs_to :sender, :class_name=>'User', :foreign_key=>'sender_id'
    belongs_to :receiver, :class_name=>'User', :foreign_key=>'receiver_id'
end

但我不知道如何对用户进行建模，任何建议都会受到赞赏。

原文

I want to model messages between users, here is the requirement:

User has received and sent messages, and should be retrieved by user.received_messages and user.sent_messages
Message has sender and receiver, and should be retrieved by message.sender and message.receiver.

I have created the User model as:

script/generate model User name:string

and Message model as:

script/generate model Message content:text sender_id:integer receiver_id:integer

I have come up with the Message like below, and it works as wish

class Message < ActiveRecord::Base
    belongs_to :sender, :class_name=>'User', :foreign_key=>'sender_id'
    belongs_to :receiver, :class_name=>'User', :foreign_key=>'receiver_id'
end

but I don't know how to model the User, any advise is appreciated.

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允世 2024-07-17 23:27:12

就像消息模型中一样：

class User < ActiveRecord::Base
  has_many :sent_messages, :class_name => "Message", :foreign_key => "sender_id"
  has_many :received_messages, :class_name => "Message", :foreign_key => "receiver_id"
end

Just as in the Message model:

class User < ActiveRecord::Base
  has_many :sent_messages, :class_name => "Message", :foreign_key => "sender_id"
  has_many :received_messages, :class_name => "Message", :foreign_key => "receiver_id"
end

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甜尕妞 2024-07-17 23:27:12

@eric2323223

如果您只是从米兰复制/粘贴代码，那么我怀疑您看到的错误是因为“foreign_key”前面缺少分号。

这些行应为：

  has_many :sent_messages, :class_name => "Message", :foreign_key => "sender_id"
  has_many :received_messages, :class_name => "Message", :foreign_key => "receiver_id"

肯尼

@eric2323223

If you just copy/pasted the code from Milan, then I suspect the error you're seeing is because there's a missing semi-colon in front of 'foreign_key'.

The lines should read:

  has_many :sent_messages, :class_name => "Message", :foreign_key => "sender_id"
  has_many :received_messages, :class_name => "Message", :foreign_key => "receiver_id"

Kenny

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