Ruby on Rails -HTTP错误处理 [英] Ruby on Rails -HTTP error handling

问题描述

这是我在这里的第一篇文章，所以我希望我把这个问题发布在正确的地方。否则，请让我知道，以便我知道下次发布在这里：）

我正在一个RoR网站上工作，并希望处理服务器错误（400， 404,500等）。此外，由于网站是动态的，我想处理rails环境中的错误，而不是在服务器级别。
我想做的一个例子可能是当用户使用可选的材料或者搜索栏，当她碰到不能加载或根本不存在的页面或模板时。

我是RoR的新手，所以请放弃我，以防我明白了。

所以，我做了一些阅读我认为使用rescue_from异常处理程序是我的方式。 （如果您有任何意见，会非常高兴）。

我有一个简单的工作原型（见下面的代码）开始运行，但是，当我在代码中包含以下异常处理程序时，我收到错误：

  rescue_from ActionController :: MissingTemplate，with with => ：not_found＃404 
  

现在，我看不到我有一个拼写错误，我已经看到这行代码贴在网上。但是，当我包含它，我得到以下路由错误：

 路由错误没有路由匹配/ errorhandle与{：方法=>：get} 
  

我在rails 2.3.5上工作，这样做吗？

我希望你能帮助我解决这个问题。

干杯！
/ Maja

  class ApplicationController< ActionController :: Base 
 
帮助：所有＃包括所有的帮助者，所有的时间
 
 protect_from_forgery＃看到ActionController :: RequestForgery保护细节
 
 #ActiveRecord异常
 rescue_from ActiveRecord :: RecordNotFound，：with => ：not_found＃400 
 
 #ActiveResource exceptions 
 rescue_from ActiveResource :: ResourceNotFound，：with => ：not_found＃404 
 
 #ActionView例外
 rescue_from ActionView :: TemplateError，：with => ：not_found＃500 
 
 #ActionController exceptions 
 rescue_from ActionController :: RoutingError，：with => ：not_found＃404 
 
 rescue_from ActionController :: UnknownController，：with => ：not_found＃404 
 
 rescue_from ActionController :: MethodNotAllowed，with with => ：not_found＃405 
 
 rescue_from ActionController :: InvalidAuthenticityToken，：with => ：not_found＃405 
 
 rescue_from ActionController :: UnknownAction，：with => ：not_found＃501 
 
＃这个特殊的异常导致所有其他的失败....为什么？ 
＃rescue_from ActionController :: MissingTemplate，：with => ：not_found＃404 
 
 protected 
 def not_found 
 render：text => 错误，：status => 404 
 end 
 
＃从您的日志中清理敏感参数
＃filter_parameter_logging：password 
 end 
  

解决方案

快速查看这些：
http://www.ruby-forum.com/topic/47898

http://henrik.nyh.se/2008/09/404-invalid-rails-格式

特别是第一个链接中的帖子：

您不能使用常规的rescue关键字来拯救MissingTemplate
异常。

请改用rescue_action，例如：

  def rescue_action（exception）
 if :: ActionController :: MissingTemplate === exception 
 render：text => '拯救'
 else 
超级
结束
结束
  

< blockquote>

肯特。

This is my first post here, so I hope that I am posting this question the right place. Otherwise, please let me know so that I know for next time I post here :)

I am working on a RoR website and would like to handle server errors (400, 404, 500, etc.) individually. Also, since the website is dynamic I would like to handle the errors within the rails environment rather than at the server level. An example of what I would like to do could be to present the user with optional material or a search bar when she bumps into a page or template that will not load or simply does not exist.

I am new at RoR so please bare with me in case I am asking the obvious.

So, I did a bit of reading and I think that using the rescue_from exception handler is the way to go in my case. (Would be more than happy to hear if any of you have a different opinion).

I have a simple working prototype (see code below) up and running, however, I get an error when I include the following exception handler to the code:

rescue_from ActionController::MissingTemplate,          :with => :not_found #404

Now, I can't see that I have a spelling error and I have seen this line in code posted on the web. However, when I include it I get the following routing error:

Routing Error No route matches "/errorhandle" with {:method=>:get}

I am working on rails 2.3.5, perhaps that has got something to do with it?

I hope that you can help me shed some light on this issue.

Cheers! /Maja

class ApplicationController < ActionController::Base

    helper :all # include all helpers, all the time

    protect_from_forgery #See ActionController::RequestForgeryProtection for details

    #ActiveRecord exceptions
    rescue_from ActiveRecord::RecordNotFound, :with => :not_found #400   

    #ActiveResource exceptions  
    rescue_from ActiveResource::ResourceNotFound, :with => :not_found #404

    #ActionView exceptions
    rescue_from ActionView::TemplateError, :with => :not_found #500

    #ActionController exceptions
    rescue_from ActionController::RoutingError, :with => :not_found #404   

    rescue_from ActionController::UnknownController, :with => :not_found #404 

    rescue_from ActionController::MethodNotAllowed, :with => :not_found #405   

    rescue_from ActionController::InvalidAuthenticityToken, :with => :not_found #405

    rescue_from ActionController::UnknownAction, :with => :not_found #501

    # This particular exception causes all the rest to fail.... why?
    # rescue_from ActionController::MissingTemplate, :with => :not_found #404

    protected
    def not_found
        render :text => "Error", :status => 404
    end

    # Scrub sensitive parameters from your log
    # filter_parameter_logging :password 
end

解决方案

Take a quick look at these: http://www.ruby-forum.com/topic/47898

http://henrik.nyh.se/2008/09/404-invalid-rails-format

In particular, a post in the first link:

You can't use a regular 'rescue' keyword to rescue MissingTemplate exception.

Use rescue_action instead, for example:

def rescue_action(exception)
  if ::ActionController::MissingTemplate === exception
     render :text => 'rescued'
  else
     super
  end
end

Kent.

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