ruby-on-rails - 已完成 500 Internal Server Error； RestClient::NotAcceptable(406 Not Acceptable )

Question

我是 Rails 和 stackoverflow 的新手，所以我会尽量说清楚。我要求更改某个项目，所以我获取了源代码并尝试让它运行我自己的工作计算机(在 Windows 上......)在我的本地浏览器上测试它(cf:rails s)。该项目应该可以正常工作，因为它已经投入生产，所以我认为问题出在我自己的工作环境中。安装所有需要的 gem 后，运行 bundle install 并启动数据库服务器(该项目使用 mongodb)，我运行 rails server。该命令实际上有效，但是当我尝试使用本地主机地址 (http://localhost:3000/) 上的任何浏览器连接应用程序时，我收到错误消息，我真的不明白原因...

这是我得到的日志:

---

Started GET "/" for 127.0.0.1 at 2012-12-04 14:51:30 +0100
Processing by HomeController#index as HTML
** [Localeapp] 1354629090-- Handling translation updates
** [Localeapp] 1354629090 - polling
** [Localeapp] API CALL: get https://api.localeapp.com/v1/projects/hhMxHgKAzj9p1dFuS0GnTTnemJ5F9dXLDuCa1KacQSymUcmTFk/translations.yml?updated_at=1354612995
** [Localeapp] ATTEMPT 1
Completed 500 Internal Server Error in 1192ms

RestClient::NotAcceptable (406 Not Acceptable):
  rest-client (1.6.7) lib/restclient/abstract_response.rb:48:in `return!'
  rest-client (1.6.7) lib/restclient/request.rb:230:in `process_result'
  rest-client (1.6.7) lib/restclient/request.rb:178:in `block in transmit'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/net/http.rb:745:in `start'
  rest-client (1.6.7) lib/restclient/request.rb:172:in `transmit'
  rest-client (1.6.7) lib/restclient/request.rb:64:in `execute'
  rest-client (1.6.7) lib/restclient/request.rb:33:in `execute'
  localeapp (0.5.2) lib/localeapp/api_caller.rb:66:in `make_call'
  localeapp (0.5.2) lib/localeapp/api_caller.rb:28:in `call'
  localeapp (0.5.2) lib/localeapp/api_call.rb:6:in `api_call'
  localeapp (0.5.2) lib/localeapp/poller.rb:43:in `poll!'
  localeapp (0.5.2) lib/localeapp/rails/controller.rb:14:in `handle_translation_updates'
  activesupport (3.2.3) lib/active_support/callbacks.rb:429:in `_run__744959596__process_action__507377612__callbacks'
  activesupport (3.2.3) lib/active_support/callbacks.rb:405:in `__run_callback'
  activesupport (3.2.3) lib/active_support/callbacks.rb:385:in `_run_process_action_callbacks'
  activesupport (3.2.3) lib/active_support/callbacks.rb:81:in `run_callbacks'
  actionpack (3.2.3) lib/abstract_controller/callbacks.rb:17:in `process_action'
  actionpack (3.2.3) lib/action_controller/metal/rescue.rb:29:in `process_action'
  actionpack (3.2.3) lib/action_controller/metal/instrumentation.rb:30:in `block in process_action'
  activesupport (3.2.3) lib/active_support/notifications.rb:123:in `block in instrument'
  activesupport (3.2.3) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
  activesupport (3.2.3) lib/active_support/notifications.rb:123:in `instrument'
  actionpack (3.2.3) lib/action_controller/metal/instrumentation.rb:29:in `process_action'
  actionpack (3.2.3) lib/action_controller/metal/params_wrapper.rb:205:in `process_action'
  actionpack (3.2.3) lib/abstract_controller/base.rb:121:in `process'
  actionpack (3.2.3) lib/abstract_controller/rendering.rb:45:in `process'
  actionpack (3.2.3) lib/action_controller/metal.rb:203:in `dispatch'
  actionpack (3.2.3) lib/action_controller/metal/rack_delegation.rb:14:in `dispatch'
  actionpack (3.2.3) lib/action_controller/metal.rb:246:in `block in action'
  actionpack (3.2.3) lib/action_dispatch/routing/route_set.rb:73:in `call'
  actionpack (3.2.3) lib/action_dispatch/routing/route_set.rb:73:in `dispatch'
  actionpack (3.2.3) lib/action_dispatch/routing/route_set.rb:36:in `call'
  journey (1.0.4) lib/journey/router.rb:68:in `block in call'
  journey (1.0.4) lib/journey/router.rb:56:in `each'
  journey (1.0.4) lib/journey/router.rb:56:in `call'
  actionpack (3.2.3) lib/action_dispatch/routing/route_set.rb:600:in `call'
  omniauth (1.1.1) lib/omniauth/strategy.rb:177:in `call!'
  omniauth (1.1.1) lib/omniauth/strategy.rb:157:in `call'
  omniauth (1.1.1) lib/omniauth/builder.rb:48:in `call'
  mongoid (2.5.0) lib/rack/mongoid/middleware/identity_map.rb:33:in `block in call'
  mongoid (2.5.0) lib/mongoid.rb:133:in `unit_of_work'
  mongoid (2.5.0) lib/rack/mongoid/middleware/identity_map.rb:33:in `call'
  sass (3.2.1) lib/sass/plugin/rack.rb:54:in `call'
  warden (1.2.1) lib/warden/manager.rb:35:in `block in call'
  warden (1.2.1) lib/warden/manager.rb:34:in `catch'
  warden (1.2.1) lib/warden/manager.rb:34:in `call'
  actionpack (3.2.3) lib/action_dispatch/middleware/best_standards_support.rb:17:in `call'
  rack (1.4.1) lib/rack/etag.rb:23:in `call'
  rack (1.4.1) lib/rack/conditionalget.rb:25:in `call'
  actionpack (3.2.3) lib/action_dispatch/middleware/head.rb:14:in `call'
  actionpack (3.2.3) lib/action_dispatch/middleware/params_parser.rb:21:in `call'
  actionpack (3.2.3) lib/action_dispatch/middleware/flash.rb:242:in `call'
  rack (1.4.1) lib/rack/session/abstract/id.rb:205:in `context'
  rack (1.4.1) lib/rack/session/abstract/id.rb:200:in `call'
  actionpack (3.2.3) lib/action_dispatch/middleware/cookies.rb:338:in `call'
  actionpack (3.2.3) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call'
  activesupport (3.2.3) lib/active_support/callbacks.rb:405:in `_run__286698992__call__202403334__callbacks'
  activesupport (3.2.3) lib/active_support/callbacks.rb:405:in `__run_callback'
  activesupport (3.2.3) lib/active_support/callbacks.rb:385:in `_run_call_callbacks'
  activesupport (3.2.3) lib/active_support/callbacks.rb:81:in `run_callbacks'
  actionpack (3.2.3) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
  actionpack (3.2.3) lib/action_dispatch/middleware/reloader.rb:65:in `call'
  actionpack (3.2.3) lib/action_dispatch/middleware/remote_ip.rb:31:in `call'
  actionpack (3.2.3) lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call'
  actionpack (3.2.3) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
  railties (3.2.3) lib/rails/rack/logger.rb:26:in `call_app'
  railties (3.2.3) lib/rails/rack/logger.rb:16:in `call'
  quiet_assets (1.0.1) lib/quiet_assets.rb:20:in `call_with_quiet_assets'
  actionpack (3.2.3) lib/action_dispatch/middleware/request_id.rb:22:in `call'
  rack (1.4.1) lib/rack/methodoverride.rb:21:in `call'
  rack (1.4.1) lib/rack/runtime.rb:17:in `call'
  activesupport (3.2.3) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
  rack (1.4.1) lib/rack/lock.rb:15:in `call'
  actionpack (3.2.3) lib/action_dispatch/middleware/static.rb:62:in `call'
  airbrake (3.1.4) lib/airbrake/rack.rb:41:in `call'
  airbrake (3.1.4) lib/airbrake/user_informer.rb:12:in `call'
  railties (3.2.3) lib/rails/engine.rb:479:in `call'
  railties (3.2.3) lib/rails/application.rb:220:in `call'
  railties (3.2.3) lib/rails/railtie/configurable.rb:30:in `method_missing'
  rack (1.4.1) lib/rack/deflater.rb:13:in `call'
  rack (1.4.1) lib/rack/content_length.rb:14:in `call'
  railties (3.2.3) lib/rails/rack/log_tailer.rb:14:in `call'
  thin (1.4.1) lib/thin/connection.rb:80:in `block in pre_process'
  thin (1.4.1) lib/thin/connection.rb:78:in `catch'
  thin (1.4.1) lib/thin/connection.rb:78:in `pre_process'
  thin (1.4.1) lib/thin/connection.rb:53:in `process'
  thin (1.4.1) lib/thin/connection.rb:38:in `receive_data'
  eventmachine-1.0.0-x86 (mingw32) lib/eventmachine.rb:187:in `run_machine'
  eventmachine-1.0.0-x86 (mingw32) lib/eventmachine.rb:187:in `run'
  thin (1.4.1) lib/thin/backends/base.rb:63:in `start'
  thin (1.4.1) lib/thin/server.rb:159:in `start'
  rack (1.4.1) lib/rack/handler/thin.rb:13:in `run'
  rack (1.4.1) lib/rack/server.rb:265:in `start'
  railties (3.2.3) lib/rails/commands/server.rb:70:in `start'
  railties (3.2.3) lib/rails/commands.rb:55:in `block in <top (required)>'
  railties (3.2.3) lib/rails/commands.rb:50:in `tap'
  railties (3.2.3) lib/rails/commands.rb:50:in `<top (required)>'
  script/rails:6:in `require'
  script/rails:6:in `<main>'


  Rendered C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/middleware/templates/rescues/_trace.erb (4.0ms)
  Rendered C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (2.0ms)
  Rendered C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (56.0ms)

---

这是提到的 Controller :

---

class HomeController < ApplicationController
  def index
    @presenter = Home::IndexPresenter.new
    @article_presenter = Articles::IndexPresenter.new(Article.with_state(:published).last)
  end
end

---

如果有人能帮助我，那就太好了。问我是否忘记提及某事。谢谢你。

Answer 1

根本问题是 rest_client 请求的 URL 返回 HTTP 406 代码，您可以通过运行 curl 查看，例如

curl --include https://api.localeapp.com/v1/projects/hhMxHgKAzj9p1dFuS0GnTTnemJ5F9dXLDuCa1KacQSymUcmTFk/translations.yml?updated_at=1354612995

(我刚刚注意到您在 Windows 环境中——如果您无权访问 curl，则可以安装几个工具来发出请求)

然后，在您的 Controller 中，似乎没有任何检查来查看 RestClient 调用的响应是否成功(2xx 状态)。因为 RestClient 引发异常，您的应用程序会收到 500 错误。

因此，如果您不确定 URL 为何不起作用，则需要检查 localeapp.com 提供的 API

但考虑到 API 是一项外部服务，您可能还想在软件中添加一些错误处理。那里有几个称为 RestClient 的东西，但如果它是由 archiloque 提供的，则文档提供了一个 good example of "result handling" here。 .