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Rails异常处理器宝石

ruby-on-railsrubyexceptionhandler
3
我已经安装了Rails exception_handler，并尝试按照说明设置自定义错误处理，但我仍然收到该gem创建的标准500错误消息：

500内部服务器错误

如果您是此网站的管理员，请阅读此Web应用程序的日志文件和/或Web服务器的日志文件以查找出错原因。

这是我添加到config/application.rb的内容：
class Application < Rails::Application
  config.exception_handler = {
      dev: true,
      layouts: {
        '500' => 'exception'
      }
  }
end

我在 layouts/exception.html.erb 创建了一个异常页面布局：

<!DOCTYPE html>
<html>
  <head>
    <title><%= "Error - #{@exception.status} Error" %></title>
  </head>

  <body>

    <div class="container">
      <%= yield %>
    </div>

  </body>
</html>

使用以下命令生成默认的异常视图: rails generate exception_handler:views


(该内容为关于IT技术的翻译)
<div class="error">
    <% if /^(5[0-9]{2})$/ =~ @exception.status.to_s %>

        <!--Message -->
        <%= content_tag :div, class: "message" do %>
            <%= content_tag :div, class: "title" do %>
                <span><%= "#{@exception.status} Error - #{details[:name]}" %></span>
                <%= link_to image_tag("exception_handler/close.png"), main_app.root_url, title: "Close (Go back home)", class: "close" %>
            <% end %>

            <%= content_tag :div, class: "details" do %>
                <%= image_tag "exception_handler/alert.png", title: "#{@exception.status} Error" %>
                <div class="status"><%= @exception.status %> Error</div>
            <% end %>

            <%= content_tag :div, class: "info" do %>
                <span><%= details[:description] %></span>
                <div class="notification">
                    <%= link_to image_tag("exception_handler/home.png", title: "Go Back Home"), main_app.root_url, class: "home" %>
                    <div class="version">v<%= Rails.version %></div>
                    <strong>Our developers have been notified - we're working on it!</strong>
                </div>
            <% end %>
            
        <% end %>

    <% else %>

        <%= content_tag :div, details[:description], class: "message" %>
            
    <% end %>
</div>

我已经尝试重新启动Rails服务器，以确保更改生效，但它仍然无法正常工作。我错过了什么？

你有查看日志文件吗？看看错误是什么？也许这个 gem 无法处理这个错误。 - slowjack2k
@slowjack2k 看起来它正在尝试使用我的默认布局 application.html.erb，而不是 exception.html.erb：Completed 500 Internal Server Error in 299ms Error during failsafe response: undefined method each' for nil:NilClass /Users/godzilla74/Coding/neo-api/app/views/layouts/_navigation.html.erb:38:in _app_views_layouts__navigation_html_erb__2393319544277720129_70250216188520' - Godzilla74
所以原始错误可能不是500。您只为500定义了布局。 - slowjack2k
2
你应该将'500' => 'exception'更改为500 => 'exception'（键值500是整数而不是字符串） - okliv
这是Rails在你的代码中出现错误嵌套时显示的错误信息。 - rebagliatte
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1个回答
0
在 version exception_handler 0.8.0.0 中，config/application.rb 文件。
config.exception_handler = {
dev: nil, # allows you to turn ExceptionHandler "on" in development
db:nil, # allocates a "table name" into which exceptions are saved (defaults to nil)
email: "", # sends exception emails to a listed email (string // "you@email.com")

  # Custom Exceptions
  custom_exceptions: {
    #'ActionController::RoutingError' => :not_found # => example
  },

  # On default 5xx error page, social media links included
  social: {        
    facebook: nil, # Facebook page name   
    twitter:  nil, # Twitter handle  
    youtube:  nil, # Youtube channel name / ID
    linkedin: nil, # LinkedIn name
    fusion:   nil  # FL Fusion handle
  },  

  # This is an entirely NEW structure for the "layouts" area
  # You're able to define layouts, notifications etc ↴

  # All keys interpolated as strings, so you can use symbols, strings or integers where necessary
  exceptions: {

    :all => {
      layout: "exception", # define layout
      notification: true # (false by default)
  # action: ____, (this is general)
  # background: (can define custom background for exceptions layout if required)
    },
    404 => {
      layout: "exception", # define layout
      notification: true # (false by default)
  # action: ____, (this is general)
  # background: (can define custom background for exceptions layout if required)
    },    
    500 => {
      layout: "exception", # define layout
      notification: true # (false by default)
  # action: ____, (this is general)
  # background: (can define custom background for exceptions layout if required)
    }

    # This is the old structure
    # Still works but will be deprecated in future versions

    # 501 => "exception",
    # 502 => "exception",
    # 503 => "exception",
    # 504 => "exception",
    # 505 => "exception",
    # 507 => "exception",
    # 510 => "exception"

  }
}
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