向控制器發送每個請求的長輪詢實施

Question

以下是實現長輪詢的代碼。

class ApplicationController < ActionController::Base 
    # Prevent CSRF attacks by raising an exception. 
    # For APIs, you may want to use :null_session instead. 
    protect_from_forgery with: :exception 
    cattr_accessor :acArray 
end 

ApplicationController.acArray = [] 

class HelloController < ApplicationController 
    def initialize 
    ApplicationController.acArray << self 
    end 

    def index 
    ApplicationController.acArray.each_with_index {|val, index| 
     if index == 1 # only on second request serve the first request, until then hold the object in memory 
      val.render :text => ApplicationController.acArray.length 
     end 
    } 
    end 
end 

的問題是所述第一請求被與所述消息

模板丟失 缺失模板你好/索引，應用程序/索引含{立即失敗：區域設置=> [：EN]：格式= > [：html]，：handlers => [：erb，：builder，：raw，：ruby，：jbuilder，：coffee]}。搜查：*「/家/ MYHOME的/ tmp /聊天/應用/視圖」

如何延遲渲染，而不是讓軌道搜索視圖文件，而不是返回失敗狀態

Answer 1

也許這將工作：

until ApplicationController.acArray.length > 1 do |process| 
    end 
    ApplicationController.acArray.each_with_index{|val, index| 
     if index == 1 
      val.render :text => ApplicationController.acArray.length 
     end 
    } 
`