Ruby 应用程序响应直到堆栈太深

Question

我在这里不知所措。我有一个相当简单的事情，但似乎遇到了很多问题。我正在开发直接的网络爬虫。人们发布请求并将其发送到队列中。如果他们想查询队列中有什么：路由是

127.0.0.1:8080/requests/id/1.json

响应是操作 (def) CrawlerController 是控制器。 请求是模型。

这是路线：（虽然我不认为它相关）

  match 'requests/id/:id' => 'crawler#response'

这是控制器内的定义：

  def response
    @request = Request.find(params[:id])
   respond_to do |format|
     #format.html { render :action => "new"}
     format.json { render :json => @request.to_json }
    end
  end

我得到的错误是堆栈级别太深。如果我查看控制台输出：

编辑：第 21 行和第 19 行是 @respond 要做的事情，而 format.json

  CACHE (0.0ms)  SELECT "requests".* FROM "requests" WHERE "requests"."id" = 1 LIMIT 1
  CACHE (0.0ms)  SELECT "requests".* FROM "requests" WHERE "requests"."id" = 1 LIMIT 1
  CACHE (0.0ms)  SELECT "requests".* FROM "requests" WHERE "requests"."id" = 1 LIMIT 1
  CACHE (0.0ms)  SELECT "requests".* FROM "requests" WHERE "requests"."id" = 1 LIMIT 1
  CACHE (0.0ms)  SELECT "requests".* FROM "requests" WHERE "requests"."id" = 1 LIMIT 1
  CACHE (0.0ms)  SELECT "requests".* FROM "requests" WHERE "requests"."id" = 1 LIMIT 1
  CACHE (0.0ms)  SELECT "requests".* FROM "requests" WHERE "requests"."id" = 1 LIMIT 1
  CACHE (0.0ms)  SELECT "requests".* FROM "requests" WHERE "requests"."id" = 1 LIMIT 1
  CACHE (0.0ms)  SELECT "requests".* FROM "requests" WHERE "requests"."id" = 1 LIMIT 1
  CACHE (0.0ms)  SELECT "requests".* FROM "requests" WHERE "requests"."id" = 1 LIMIT 1
Completed 500 Internal Server Error in 2688ms

SystemStackError (stack level too deep):
  app/controllers/crawler_controller.rb:21:in `response'
  app/controllers/crawler_controller.rb:19:in `response'
  app/controllers/crawler_controller.rb:21:in `response'
  app/controllers/crawler_controller.rb:19:in `response'
  app/controllers/crawler_controller.rb:21:in `response'
  app/controllers/crawler_controller.rb:19:in `response'

很奇怪吧？

Answer 1

尝试将您的方法从 response 重命名为其他名称。我认为 Rails 可能会将响应用于其他用途。

Answer 2

尝试将变量从 @request 重命名为其他名称。我认为 Rails 可能会将 @request 用于其他用途。

还可以尝试将您的操作从 response 重命名为其他内容。我认为 Rails 可能会将响应用于其他用途。