Rails：Heroku部署首次失败

我认为问题是我使用的是SQLite3，所以我迁移到PostgreSQL但问题仍然存在。 该应用程序在本地工作正常 我用heroku打开我的应用程序，它给了我以下错误：

Application Error. An error occurred in the application and your page could not be served. Please try again in a few moments. If you are the application owner, check your logs for details.. 

我试图通过查看日志找到解决方案但失败了，所以我需要别人的帮助。 这是我的日志，我感谢任何帮助！

 2012-11-19T00:55:37+00:00 heroku[web.1]: Starting process with command `bundle exec thin start -R config.ru -e production -p 3545` 2012-11-19T00:55:39+00:00 app[web.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your the release notes for more on this: http://weblog.rubyonrails.org/2012/01/04/rails-3-2-0-rc2-has-been-released. (called from  at /app/config/environment.rb:5) 2012-11-19T00:55:39+00:00 app[web.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your the release notes for more on this: http://weblog.rubyonrails.org/2012/01/04/rails-3-2-0-rc2-has-been-released. (called from  at /app/config/environment.rb:5) 2012-11-19T00:55:41+00:00 app[web.1]: from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.1/lib/rails/application.rb:136:in `initialize!' 2012-11-19T00:55:41+00:00 app[web.1]: /app/config/initializers/formtastic.rb:2:in `': uninitialized constant Formtastic (NameError) 2012-11-19T00:55:41+00:00 app[web.1]: from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.1/lib/rails/engine.rb:588:in `block (2 levels) in ' 2012-11-19T00:55:41+00:00 app[web.1]: from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.1/lib/rails/initializable.rb:30:in `run' 2012-11-19T00:55:41+00:00 app[web.1]: from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.1/lib/rails/engine.rb:587:in `each' 2012-11-19T00:55:41+00:00 app[web.1]: from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.1/lib/rails/initializable.rb:55:in `block in run_initializers' 2012-11-19T00:55:41+00:00 app[web.1]: from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.1/lib/rails/initializable.rb:30:in `instance_exec' 2012-11-19T00:55:41+00:00 app[web.1]: from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.1/lib/rails/engine.rb:587:in `block in ' 2012-11-19T00:55:41+00:00 app[web.1]: from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.1/lib/rails/initializable.rb:54:in `each' 2012-11-19T00:55:41+00:00 app[web.1]: from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.1/lib/rails/initializable.rb:54:in `run_initializers' 2012-11-19T00:55:41+00:00 app[web.1]: from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.1/lib/rails/railtie/configurable.rb:30:in `method_missing' 2012-11-19T00:55:41+00:00 app[web.1]: from /app/config/environment.rb:5:in `' 2012-11-19T00:55:41+00:00 app[web.1]: from config.ru:3:in `require' 2012-11-19T00:55:41+00:00 app[web.1]: from config.ru:3:in `block in ' 2012-11-19T00:55:41+00:00 app[web.1]: from /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/builder.rb:51:in `instance_eval' 2012-11-19T00:55:41+00:00 app[web.1]: from /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/builder.rb:51:in `initialize' 2012-11-19T00:55:41+00:00 app[web.1]: from config.ru:1:in `new' 2012-11-19T00:55:41+00:00 app[web.1]: from config.ru:1:in `' 2012-11-19T00:55:41+00:00 app[web.1]: from /app/vendor/bundle/ruby/1.9.1/gems/thin-1.5.0/lib/rack/adapter/loader.rb:33:in `eval' 2012-11-19T00:55:41+00:00 app[web.1]: from /app/vendor/bundle/ruby/1.9.1/gems/thin-1.5.0/lib/rack/adapter/loader.rb:33:in `load' 2012-11-19T00:55:41+00:00 app[web.1]: from /app/vendor/bundle/ruby/1.9.1/gems/thin-1.5.0/lib/thin/controllers/controller.rb:181:in `load_rackup_config' 2012-11-19T00:55:41+00:00 app[web.1]: from /app/vendor/bundle/ruby/1.9.1/gems/thin-1.5.0/lib/thin/runner.rb:187:in `run_command' 2012-11-19T00:55:41+00:00 app[web.1]: from /app/vendor/bundle/ruby/1.9.1/gems/thin-1.5.0/lib/thin/runner.rb:152:in `run!' 2012-11-19T00:55:41+00:00 app[web.1]: from /app/vendor/bundle/ruby/1.9.1/gems/thin-1.5.0/bin/thin:6:in `' 2012-11-19T00:55:41+00:00 app[web.1]: from /app/vendor/bundle/ruby/1.9.1/bin/thin:19:in `load' 2012-11-19T00:55:41+00:00 app[web.1]: from /app/vendor/bundle/ruby/1.9.1/bin/thin:19:in `' 2012-11-19T00:55:41+00:00 app[web.1]: from /app/vendor/bundle/ruby/1.9.1/gems/thin-1.5.0/lib/thin/controllers/controller.rb:71:in `start' 2012-11-19T00:55:42+00:00 heroku[web.1]: Process exited with status 1 2012-11-19T00:56:34+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path=/ host=fast-savannah-6843.herokuapp.com fwd= dyno= queue= wait= connect= service= status=503 bytes= 2012-11-19T00:56:34+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path=/favicon.ico host=fast-savannah-6843.herokuapp.com fwd= dyno= queue= wait= connect= service= status=503 bytes= 2012-11-19T00:57:44+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path=/ host=fast-savannah-6843.herokuapp.com fwd= dyno= queue= wait= connect= service= status=503 bytes= 2012-11-19T00:57:44+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path=/favicon.ico host=fast-savannah-6843.herokuapp.com fwd= dyno= queue= wait= connect= service= status=503 bytes= 

Answer 1

对于首次部署的人来说，这是我遇到的问题，以及我如何解决它们：

1. RailsInstaller和Heroku Toolbelt不完全兼容 ：如果在安装Heroku工具带后遇到问题，我建议你删除railsinstaller和heroku toolbelt，并再次安装railsinstaller。 然后，在您的gem文件中，只需添加gem 'heroku'并运行bundle install。 我不需要任何额外的东西来成功部署我的应用程序。 Heroku Toolbelt安装了ruby 1.9.2 v，并为您的偏好添加了错误的路径。 您可以选择手动将此PATH修复到正确的位置，例如C：RailsInstaller：Ruby1.9.3但我发现重新安装所有内容更容易。

2.您必须从SQLite3迁移到PostgreSQL ：如果您不确定如何执行此操作，请执行此操作。

3.按照Heroku教程最终部署您的应用程序 ：按照此操作 。 如果你得到的错误与“对象不存在”一致，请尝试运行heroku run rake db:migrate 。

祝你好运部署！