NoMethodError未定义的方法'参与者'

Question

我有mailboxer gem设置，当我访问/对话时，我收到一个undefined method参与者''错误指向与索引对话控制器。我向索引操作添加了一个会话实例变量，该变量将包含用户的所有收件箱邮件。

有人可以发现我的错误在我的定义？

对话控制器：

helper_method :mailbox, :conversation 

    def index 
     @conversations ||= current_user.mailbox.inbox.all 
    end 

    def reply 
     current_user.reply_to_conversation(conversation, *message_params(:body, :subject)) 
     redirect_to conversation 
    end 

    def trash_folder     
     @trash ||= current_user.mailbox.trash.all   
     end 


    def create 
     recipient_emails = conversation_params(:recipients).split(',') 
     recipients = User.where(email: recipient_emails).all 

     conversation = current_user. 
     send_message(recipients, *conversation_params(:body, :subject)).conversation 

     redirect_to conversation 
    end 

    def reply 
     current_user.reply_to_conversation(conversation, *message_params(:body, :subject)) 
     redirect_to conversation 
    end 

    def trash 
     conversation.move_to_trash(current_user) 
     redirect_to :conversations 
    end 

    def untrash 
     conversation.untrash(current_user) 
     redirect_to :conversations 
    end 

    private 

    def mailbox 
     @mailbox ||= current_user.mailbox 
    end 

    def conversation 
     @conversation ||= mailbox.conversations.find(params[:id]) 
    end 

    def conversation_params(*keys) 
     fetch_params(:conversation, *keys) 
    end 

    def message_params(*keys) 
     fetch_params(:message, *keys) 
    end 

    def fetch_params(key, *subkeys) 
     params[key].instance_eval do 
     case subkeys.size 
     when 0 then self 
     when 1 then self[subkeys.first] 
     else subkeys.map{|k| self[k] } 
     end 
     end 
    end 
    end 

路线：

resources :users do |user| 

end 

resources :messages do 
    member do 
    post :new 
    end 
end 
resources :conversations do 
    member do 
    post :reply 
    post :trash 
    post :untrash 
    end 
    collection do 
    get :trashbin 
    post :empty_trash 
    end 
end 

Answer 1

我终于可以重现您的问题，我解决它通过运行：

rails g mailboxer:install 

和

rake db:migrate 

您可能需要在db中对现有的conversations表进行一些操作。