rails 4：404,500的自定义错误页面以及默认的500错误消息来自哪里？ [英] rails 4: custom error pages for 404, 500 and where is the default 500 error message coming from?

问题描述

目前正在生产中获取此文本：

Currently in production im getting this text:

500 Internal Server Error
If you are the administrator of this website, then please read this web application's     
log file and/or the web server's log file to find out what went wrong.

该页面中没有html没有。

No html in that page nothing.

这个代码位于哪里？我有否 public / 500.html或任何这方面。

Where is this code situated? I have no public/500.html or anything in that regard.

在我的路线我有：

  get "/404", :to => "errors#error_404"
  get "/422", :to => "errors#error_404"
  get "/500", :to => "errors#error_500"
  get "/505", :to => "errors#error_505"

错误控制器：

class ErrorsController < ApplicationController

  def sub_layout
    "left"
  end

  def error_404
    render :status => 404, :formats => [:html], :layout => "white", :sub_layout => "left"
  end

  def error_422
    render :status => 422, :formats => [:html], :layout => "white", :sub_layout => "left"
  end

  def error_500
    render :status => 500, :formats => [:html], :layout => "white", :sub_layout => "left"
  end

  def error_505
    render :status => 505, :formats => [:html], :layout => "white", :sub_layout => "left"
  end

end

如何使它总是加载我的自定义错误？在一些错误，它只是抛出2行文本来自rails core的某个地方，我希望它每次都能获取自定义风格的错误页面！怎么样？ thx！

How to make it load my custom errors always? On some errors it just throw that 2 line text coming somewhere from rails core, I want it to pickup my custom styled error pages every time! how? thx!

推荐答案

您正在遇到的错误是从

https： //github.com/rails/rails/blob/4-0-stable/actionpack/lib/action_dispatch/middleware/show_exceptions.rb#L18-L22

这意味着你的异常被救出的代码本身就是抛出异常。
您可以检查您的日志文本：

This means, the code your exceptions are getting rescued by are themselves throwing exceptions. You can check your logs for text:

故障安全响应时出错：

来确定真正的异常来源，从而解决您的问题。

to identify what the exceptions really are originating from and thus solve your problem.

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