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我已经下载了一个开源代码ribbot。我是 Ruby 和 Rails 的新手，但我已经设置了我的环境，并且能够让这段代码在我的本地机器上运行。

我想使用 Heroku 作为我的服务器基础解决方案。我将此应用程序推送到 Heroku。Heroku 似乎告诉我该应用程序运行良好，但是我不断通过开源代码重定向到错误页面；它不会在我的本地机器上这样做。我怀疑它与Mongo有关。我已经为 Heroku 下载了 MongoHQ 上的插件，但仍然遇到这个问题。我知道这段代码使用 mongoid：

2012-04-16T19:06:47+00:00 app[web.1]: localhost:11211 failed (count: 2)
2012-04-16T19:06:47+00:00 app[web.1]: 
2012-04-16T19:06:47+00:00 app[web.1]: 
2012-04-16T19:06:47+00:00 app[web.1]: Started GET "/" for 208.124.140.154 at 2012-04-16 19:06:47 +0000
2012-04-16T19:06:47+00:00 app[web.1]: allow_dynamic_fields is not a valid option for Mongo::Connection
2012-04-16T19:06:47+00:00 app[web.1]: autocreate_indexes is not a valid option for Mongo::Connection
2012-04-16T19:06:47+00:00 app[web.1]: identity_map_enabled is not a valid option for Mongo::Connection
2012-04-16T19:06:47+00:00 app[web.1]: include_root_in_json is not a valid option for Mongo::Connection
2012-04-16T19:06:47+00:00 app[web.1]: include_type_for_serialization is not a valid option for Mongo::Connection
2012-04-16T19:06:47+00:00 app[web.1]: max_retries_on_connection_failure is not a valid option for Mongo::Connection
2012-04-16T19:06:47+00:00 app[web.1]: parameterize_keys is not a valid option for Mongo::Connection
2012-04-16T19:06:47+00:00 app[web.1]: scope_overwrite_exception is not a valid option for Mongo::Connection
2012-04-16T19:06:47+00:00 app[web.1]: persist_in_safe_mode is not a valid option for Mongo::Connection
2012-04-16T19:06:47+00:00 app[web.1]: preload_models is not a valid option for Mongo::Connection
2012-04-16T19:06:47+00:00 app[web.1]: raise_not_found_error is not a valid option for Mongo::Connection
2012-04-16T19:06:47+00:00 app[web.1]: skip_version_check is not a valid option for Mongo::Connection
2012-04-16T19:06:47+00:00 app[web.1]: time_zone is not a valid option for Mongo::Connection
2012-04-16T19:06:47+00:00 app[web.1]: use_utc is not a valid option for Mongo::Connection
2012-04-16T19:06:47+00:00 app[web.1]: timestamped_migrations is not a valid option for Mongo::Connection
2012-04-16T19:06:50+00:00 app[web.1]: 
2012-04-16T19:06:50+00:00 app[web.1]: Mongo::ConnectionFailure (Failed to connect to a master node at localhost:27017):
2012-04-16T19:06:50+00:00 app[web.1]:   app/controllers/application_controller.rb:19:in `current_forum'
2012-04-16T19:06:50+00:00 app[web.1]:   app/controllers/application_controller.rb:40:in `require_current_forum!'
2012-04-16T19:06:50+00:00 app[web.1]: 
2012-04-16T19:06:50+00:00 app[web.1]: 
2012-04-16T19:06:50+00:00 app[web.1]: cache: [GET /] miss
2012-04-16T19:06:50+00:00 app[web.1]:   Processing by PostsController#index as HTML
2012-04-16T19:06:50+00:00 app[web.1]: Completed 500 Internal Server Error in 2997ms
2012-04-16T19:06:50+00:00 app[web.1]: Rendered vendor/bundle/ruby/1.9.1/gems/exception_notification_rails3-1.2.0/lib/exception_notifier/views/exception_notifier/_request.text.erb (0.2ms)
2012-04-16T19:06:50+00:00 app[web.1]: Rendered vendor/bundle/ruby/1.9.1/gems/exception_notification_rails3-1.2.0/lib/exception_notifier/views/exception_notifier/_title.text.erb (0.0ms)
2012-04-16T19:06:50+00:00 app[web.1]: Rendered vendor/bundle/ruby/1.9.1/gems/exception_notification_rails3-1.2.0/lib/exception_notifier/views/exception_notifier/_session.text.erb (0.2ms)
2012-04-16T19:06:50+00:00 app[web.1]: Rendered vendor/bundle/ruby/1.9.1/gems/exception_notification_rails3-1.2.0/lib/exception_notifier/views/exception_notifier/_title.text.erb (0.0ms)
2012-04-16T19:06:50+00:00 app[web.1]: Rendered vendor/bundle/ruby/1.9.1/gems/exception_notification_rails3-1.2.0/lib/exception_notifier/views/exception_notifier/_environment.text.erb (23.9ms)
2012-04-16T19:06:50+00:00 app[web.1]: Rendered vendor/bundle/ruby/1.9.1/gems/exception_notification_rails3-1.2.0/lib/exception_notifier/views/exception_notifier/_title.text.erb (0.0ms)
2012-04-16T19:06:50+00:00 app[web.1]: Rendered vendor/bundle/ruby/1.9.1/gems/exception_notification_rails3-1.2.0/lib/exception_notifier/views/exception_notifier/_backtrace.text.erb (0.1ms)
2012-04-16T19:06:50+00:00 app[web.1]: Rendered vendor/bundle/ruby/1.9.1/gems/exception_notification_rails3-1.2.0/lib/exception_notifier/views/exception_notifier/_title.text.erb (0.0ms)
2012-04-16T19:06:50+00:00 app[web.1]: Rendered vendor/bundle/ruby/1.9.1/gems/exception_notification_rails3-1.2.0/lib/exception_notifier/views/exception_notifier/exception_notification.text.erb (26.8ms)
2012-04-16T19:06:50+00:00 app[web.1]: 
2012-04-16T19:06:50+00:00 app[web.1]: Sent mail to barmstrong@gmail.com (274ms)
2012-04-16T19:06:50+00:00 heroku[router]: GET impact-project.herokuapp.com/ dyno=web.1 queue=0 wait=0ms service=3832ms status=500 bytes=728
2012-04-16T19:06:51+00:00 app[web.1]: localhost:11211 failed (count: 3)
2012-04-16T19:06:51+00:00 app[web.1]: cache: [GET /favicon.ico] miss, store
2012-04-16T19:06:51+00:00 app[web.1]: [2012-04-16 19:06:51] ERROR NoMethodError: undefined method `each' for nil:NilClass
2012-04-16T19:06:51+00:00 app[web.1]:   /app/vendor/bundle/ruby/1.9.1/gems/rack-1.3.5/lib/rack/handler/webrick.rb:71:in `service'
2012-04-16T19:06:51+00:00 app[web.1]:   /usr/local/lib/ruby/1.9.1/webrick/httpserver.rb:111:in `service'
2012-04-16T19:06:51+00:00 app[web.1]:   /usr/local/lib/ruby/1.9.1/webrick/httpserver.rb:70:in `run'
2012-04-16T19:06:51+00:00 app[web.1]:   /usr/local/lib/ruby/1.9.1/webrick/server.rb:183:in `block in start_thread'
2012-04-16T19:06:51+00:00 heroku[router]: GET impact-project.herokuapp.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=517ms status=500 bytes=337
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1 回答 1

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如果你在 Heroku 中安装了 MongoHQ 插件，它会创建一个 MONGOHQ_URL 环境变量，你的 Rails 应用可以使用它来连接数据库。看起来您的 config/mongoid.yml 配置不正确。这是 Heroku 和 MongoHQ 的一个工作示例：

development:
    host: localhost
    database: yourapp_dev

test:
   host: localhost
   database: yourapp_test

# set these environment variables on your prod server
production:
    uri: <%= ENV['MONGOHQ_URL'] %>

希望这可以帮助！

于 2012-04-16T19:52:38.503 回答