state_machine與收件箱和發送的消息

Question

我作出了悄悄話系統和我使用狀態機知道哪裏是消息。

這是我的模型：

class Message 
    include Mongoid::Document 
    include Mongoid::Timestamps::Created 

    #fields 
    field :subject, :type => String 
    field :body, :type => String 
    field :place, :type => String 
    field :has_been_read, :type => String 

    # Relationships 
    belongs_to :sender, :class_name => 'User', :inverse_of => :messages_sent 
    belongs_to :receiver, :class_name => 'User', :inverse_of => :messages_received 

    #state machine has been read message? 
    state_machine :has_been_read, :initial => :unread do 
    event :read_message do 
    transition :from => :unread, :to => :read 
    end 
    event :mark_unread do 
    transition :from => :read, :to => :unread 
    end 
    end 
    #state machine status can be in_box, sent, draft, trash, spam 
end 

用戶模型：

class User 
include Mongoid::Document 
include Mongoid::Timestamps::Created 
. 
. 
. 
    has_many :messages_sent, :class_name => 'Message', :inverse_of => :sender 
    has_many :messages_received, :class_name => 'Message', :inverse_of => :receiver 
. 
. 
. 
end 

1º如何的消息是在同一時間上sent或inbox的地方嗎？

2º什麼初始狀態對發送者和接收者用戶的消息？

很抱歉，但我是新手與state_machine gem

非常感謝您

Answer 1

它看起來像你想在這裏追蹤兩件事情（讀狀態和交貨狀態）以及你目前組合他們在一起。我認爲這確實是有道理的，並且將這些分離開來會更清潔。

我想提出以下建議：

1. 在你的狀態機，跟蹤消息狀態：草案，發件箱，發送，收件箱，垃圾桶等

2. 分別保持在模型read_at字段存儲該消息是由收件人查看併爲此值爲零的日期時間。

   field :read_at, type: DateTime, default: nil

3. 添加一個布爾方法您的文檔檢查讀狀態：

   def read?
!@read_at.nil?
end