ruby-on-rails - Rails 3 - 生产模式下的开发错误

Question

我在我的生产服务器上使用 Rails、Passenger(都是 3.0.5)和 Nginx。据我所知，Rails 应该显示 public/404.html或 public/500.html而不是像 ActiveRecord::RecordNotFound 这样的开发错误或 Unknown action但这不会发生。我试图删除 config.ru 文件并在 nginx.conf 中设置 rack_env 或 rails_env 但没有任何帮助。

这是我的 nginx.conf:

worker_processes  1;

events {
    worker_connections  1024;
}

http {
    passenger_root /home/makk/.rvm/gems/ruby-1.9.2-p0/gems/passenger-3.0.5;
    passenger_ruby /home/makk/.rvm/bin/passenger_ruby;
    #passenger_ruby /home/makk/.rvm/wrappers/ruby-1.9.2-p0/ruby;

    include       mime.types;
    default_type  application/octet-stream;

    sendfile        on;
    keepalive_timeout  65;

    server {
        listen       80;
        server_name  localhost;

        location / {
            root   /home/makk/projects/1server/deploy/current/public;
            index  index.html index.htm;
            passenger_enabled on;
            rack_env production;

            recursive_error_pages on;

            if (-f /home/makk/projects/1server/maintenance.html) {
              return 503;
            }

            error_page 404 /404.html;
            error_page 500 502 504 /500.html;
            error_page 503 @503;
        }

        location @503 {
            error_page 405 = /maintenance.html;

            # Serve static assets if found.
              if (-f $request_filename) {
              break;
            }
            rewrite ^(.*)$ /maintenance.html break;
        }

        location ~ ^(\/phpmyadmin\/)(.*)$ {
        fastcgi_pass    127.0.0.1:9000;
        fastcgi_index   index.php;
        fastcgi_split_path_info         ^(\/phpmyadmin\/)(.*)$;
        fastcgi_param   SCRIPT_FILENAME /usr/share/phpmyadmin/$fastcgi_path_info;
        include         fastcgi_params;
        }
    }
}

似乎这个问题重复 this one但没有工作建议。

UPD :我在同一台 PC 上同时拥有开发和生产应用程序。在生产中 Rails 忽略 config.consider_all_requests_local = false (在/config/environments/production.rb 中)由于 local_request?方法。因此，下面列出了一种可能的解决方案(取自 here ):

# config/initializers/local_request_override.rb
module CustomRescue
  def local_request?
    return false if Rails.env.production? || Rails.env.staging?
    super
  end
end

ActionController::Base.class_eval do
  include CustomRescue
end

或者对于 Rails 3:

class ActionDispatch::Request
 def local?
   false
 end
end

Answer 1

要在 Rails 3 中使用它，您必须执行以下操作:

首先，创建您的 404 和 500 错误页面。我把我的放在 app/views/errors/404.html.erb和 app/views/errors/500.html.erb .

其次，将以下内容添加到 application_controller.rb:

unless Rails.application.config.consider_all_requests_local
  rescue_from Exception, :with => :render_error
  rescue_from ActiveRecord::RecordNotFound, :with => :render_not_found
  rescue_from AbstractController::ActionNotFound, :with => :render_not_found
  rescue_from ActionController::RoutingError, :with => :render_not_found
  rescue_from ActionController::UnknownController, :with => :render_not_found
  rescue_from ActionController::UnknownAction, :with => :render_not_found
end

def render_error exception
  Rails.logger.error(exception)
  render :template => "/errors/500.haml", :status => 500
end

def render_not_found exception
  Rails.logger.error(exception)
  render :template => "/errors/404.haml", :status => 404
end

最后，让你的 production.rb 不考虑所有本地请求:

config.consider_all_requests_local = false

P.S:请记住，当发生完整的路由错误时 - 即当绝对没有路由匹配时，而不仅仅是 ActiveRecord NotFound 错误时，public/404.html 将被显示，因此最好将其设置到位。我通常只是将它重定向到我的 errors_controller，这确保了后面提到的异常没有捕获的任何 404 错误仍然正确地重定向到 ErrorsController。

<script type="text/javascript">
<!--
window.location = "<%= request.host_with_port %>/errors/404"
//-->
</script>