Heroku 部署错误 - “我们很抱歉，但出了点问题”

【问题标题】：Heroku deployment error - 'We're sorry, but something went wrong"Heroku 部署错误 - “我们很抱歉，但出了点问题”
【发布时间】：2013-09-27 03:32:24
【问题描述】：

我在部署后导航到我的 heroku 应用程序时收到错误消息“我们很抱歉，但出了点问题”。这些是运行git push heroku master 之后的日志，然后是运行heroku run rake db:migrate 之后的日志。

任何建议都将不胜感激，因为我非常困在这里，而且我非常接近在线发布内容。谢谢！

2013-09-27T03:15:59.250881+00:00 app[web.1]:    /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/webrick/server.rb:170:in `block in start'
2013-09-27T03:15:59.250881+00:00 app[web.1]:    /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/webrick/server.rb:170:in `select'
2013-09-27T03:15:59.250881+00:00 app[web.1]: [2013-09-27 03:15:59] FATAL SignalException: SIGTERM
2013-09-27T03:15:59.250881+00:00 app[web.1]:    /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/webrick/server.rb:160:in `start'
2013-09-27T03:15:59.250881+00:00 app[web.1]:    /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/webrick/server.rb:32:in `start'
2013-09-27T03:15:59.250881+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0/lib/rails/commands.rb:73:in `tap'
2013-09-27T03:15:59.250881+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/handler/webrick.rb:14:in `run'
2013-09-27T03:15:59.250881+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/server.rb:264:in `start'
2013-09-27T03:15:59.251058+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0/lib/rails/commands.rb:73:in `<top (required)>'
2013-09-27T03:15:59.251058+00:00 app[web.1]:    bin/rails:4:in `<main>'
2013-09-27T03:15:59.251058+00:00 app[web.1]: [2013-09-27 03:15:59] INFO  WEBrick::HTTPServer#start done.
2013-09-27T03:15:59.250881+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0/lib/rails/commands/server.rb:84:in `start'
2013-09-27T03:15:59.251058+00:00 app[web.1]: [2013-09-27 03:15:59] INFO  going to shutdown ...
2013-09-27T03:15:59.250881+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0/lib/rails/commands.rb:78:in `block in <top (required)>'
2013-09-27T03:15:59.25105
8+00:00 app[web.1]:     bin/rails:4:in `require'
2013-09-27T03:15:59.251058+00:00 app[web.1]: Exiting
2013-09-27T03:15:59.573484+00:00 heroku[web.1]: Starting process with command `bin/rails server -p 10413 -e $RAILS_ENV`
2013-09-27T03:16:00.526665+00:00 heroku[web.1]: Process exited with status 143
2013-09-27T03:16:02.896941+00:00 app[web.1]: [2013-09-27 03:16:02] INFO  ruby 2.0.0 (2013-06-27) [x86_64-linux]
2013-09-27T03:16:02.892943+00:00 app[web.1]: [2013-09-27 03:16:02] INFO  WEBrick 1.3.1
2013-09-27T03:16:02.897429+00:00 app[web.1]: [2013-09-27 03:16:02] INFO  WEBrick::HTTPServer#start: pid=2 port=10413
2013-09-27T03:16:03.223457+00:00 heroku[web.1]: State changed from starting to up
2013-09-27T03:16:03.823477+00:00 app[web.1]: Started GET "/" for 69.204.243.201 at 2013-09-27 03:16:03 +0000
2013-09-27T03:16:03.823477+00:00 app[web.1]: => Booting WEBrick
2013-09-27T03:16:03.823477+00:00 app[web.1]: => Rails 4.0.0 application starting in production on http://0.0.0.0:10413
2013-09-27T03:16:03.823477+00:00 app[web.1]: => Ctrl-C to shutdown server
2013-09-27T03:16:03.823477+00:00 app[web.1]: => Run `rails server -h` for more startup options
2013-09-27T03:16:03.823477+00:00 app[web.1]: Started GET "/" for 69.204.243.201 at 2013-09-27 03:16:03 +0000
2013-09-27T03:16:04.145839+00:00 app[web.1]: NoMethodError (undefined method `player_1' for nil:NilClass):
2013-09-27T03:16:04.145839+00:00 app[web.1]:   app/controllers/static_pages_controller.rb:5:in `home'
2013-09-27T03:16:04.145839+00:00 app[web.1]: 
2013-09-27T03:16:04.145839+00:00 app[web.1]:   app/controllers/static_pages_controller.rb:5:in `home'
2013-09-27T03:16:04.145839+00:00 app[web.1]: 
2013-09-27T03:16:04.145839+00:00 app[web.1]: NoMethodError (undefined method `player_1' for nil:NilClass):
2013-09-27T03:16:04.145839+00:00 app[web.1]: 
2013-09-27T03:16:04.145839+00:00 app[web.1]: 
2013-09-27T03:16:04.145839+00:00 app[web.1]: 
2013-09-27T03:16:04.145839+00:00 app[web.1]: 
2013-09-27T03:16:04.438096+00:00 heroku[router]: at=info method=GET path=/favicon.ico host=guarded-dawn-5794.herokuapp.com fwd="69.204.243.201" dyno=web.1 connect=1ms service=11ms status=200 bytes=0
2013-09-27T03:16:19.959728+00:00 heroku[run.8653]: Awaiting client
2013-09-27T03:16:19.993002+00:00 heroku[run.8653]: Starting process with command `bundle exec rake db:migrate`
2013-09-27T03:16:21.287810+00:00 heroku[run.8653]: State changed from starting to up
2013-09-27T03:16:23.769398+00:00 heroku[run.8653]: Process exited with status 0
2013-09-27T03:16:23.781951+00:00 heroku[run.8653]: State changed from up to complete
2013-09-27T03:16:24.450472+00:00 app[web.1]: Started GET "/" for 69.204.243.201 at 2013-09-27 03:16:24 +0000
2013-09-27T03:16:24.450472+00:00 app[web.1]: Started GET "/" for 69.204.243.201 at 2013-09-27 03:16:24 +0000
2013-09-27T03:16:24.495722+00:00 app[web.1]: NoMethodError (undefined method `player_1' for nil:NilClass):
2013-09-27T03:16:24.495722+00:00 app[web.1]:   app/controllers/static_pages_controller.rb:5:in `home'
2013-09-27T03:16:24.495722+00:00 app[web.1]: 
2013-09-27T03:16:24.495722+00:00 app[web.1]: 
2013-09-27T03:16:24.495722+00:00 app[web.1]: 
2013-09-27T03:16:24.495722+00:00 app[web.1]:   app/controllers/static_pages_controller.rb:5:in `home'
2013-09-27T03:16:24.495722+00:00 app[web.1]: 
2013-09-27T03:16:24.495722+00:00 app[web.1]: NoMethodError (undefined method `player_1' for nil:NilClass):
2013-09-27T03:16:24.495722+00:00 app[web.1]: 
2013-09-27T03:16:24.495722+00:00 app[web.1]: 
2013-09-27T03:16:24.527866+00:00 heroku[router]: at=info method=GET path=/ host=guarded-dawn-5794.herokuapp.com fwd="69.204.243.201" dyno=web.1 connect=1ms service=55ms status=500 bytes=706
2013-09-27T03:16:24.573935+00:00 heroku[router]: at=info method=GET path=/favicon.ico host=guarded-dawn-5794.herokuapp.com fwd="69.204.243.201" dyno=web.1 connect=4ms service=7ms status=304 bytes=0
2013-09-27T03:16:25.628352+00:00 app[web.1]: Started GET "/" for 69.204.243.201 at 2013-09-27 03:16:25 +0000
2013-09-27T03:16:25.628352+00:00 app[web.1]: Started GET "/" for 69.204.243.201 at 2013-09-27 03:16:25 +0000
2013-09-27T03:16:25.641704+00:00 app[web.1]: 
2013-09-27T03:16:25.641704+00:00 app[web.1]: 
2013-09-27T03:16:25.641704+00:00 app[web.1]:   app/controllers/static_pages_controller.rb:5:in `home'
2013-09-27T03:16:25.641704+00:00 app[web.1]: NoMethodError (undefined method `player_1' for nil:NilClass):
2013-09-27T03:16:25.641704+00:00 app[web.1]: 
2013-09-27T03:16:25.641704+00:00 app[web.1]: 
2013-09-27T03:16:25.641704+00:00 app[web.1]: 
2013-09-27T03:16:25.641704+00:00 app[web.1]:   app/controllers/static_pages_controller.rb:5:in `home'
2013-09-27T03:16:25.641704+00:00 app[web.1]: NoMethodError (undefined method `player_1' for nil:NilClass):
2013-09-27T03:16:25.641704+00:00 app[web.1]: 
2013-09-27T03:16:04.160724+00:00 heroku[router]: at=info method=GET path=/ host=guarded-dawn-5794.herokuapp.com fwd="69.204.243.201" dyno=web.1 connect=2ms service=339ms status=500 bytes=706
2013-09-27T03:12:57.743462+00:00 heroku[run.5279]: State changed from starting to up
2013-09-27T03:16:25.645210+00:00 heroku[router]: at=info method=GET path=/ host=guarded-dawn-5794.herokuapp.com fwd="69.204.243.201" dyno=web.1 connect=2ms service=23ms status=500 bytes=706
2013-09-27T03:16:14.901595+00:00 heroku[api]: Starting process with command `bundle exec rake db:migrate` by jackerman09@gmail.com
2013-09-27T03:19:55+00:00 heroku[slug-compiler]: Slug compilation started
2013-09-27T03:20:21.685120+00:00 heroku[api]: Deploy 5a25d1e by jackerman09@gmail.com
2013-09-27T03:20:21.740188+00:00 heroku[api]: Release v8 created by jackerman09@gmail.com
2013-09-27T03:20:22+00:00 heroku[slug-compiler]: Slug compilation finished
2013-09-27T03:20:25.654702+00:00 heroku[web.1]: Stopping all processes with SIGTERM
2013-09-27T03:20:26.476250+00:00 app[web.1]:    /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/webrick/server.rb:160:in `start'
2013-09-27T03:20:26.476250+00:00 app[web.1]: 
[2013-09-27 03:20:26] FATAL SignalException: SIGTERM
2013-09-27T03:20:26.476250+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/handler/webrick.rb:14:in `run'
2013-09-27T03:20:26.476250+00:00 app[web.1]:    /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/webrick/server.rb:170:in `select'
2013-09-27T03:20:26.476250+00:00 app[web.1]:    /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/webrick/server.rb:170:in `block in start'
2013-09-27T03:20:26.476250+00:00 app[web.1]:    /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/webrick/server.rb:32:in `start'
2013-09-27T03:20:26.476250+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0/lib/rails/commands/server.rb:84:in `start'
2013-09-27T03:20:26.476460+00:00 app[web.1]: [2013-09-27 03:20:26] INFO  going to shutdown ...
2013-09-27T03:20:26.476460+00:00 app[web.1]: Exiting
2013-09-27T03:20:26.476250+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/server.rb:264:in `start'
2013-09-27T03:20:26.476250+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0/lib/rails/commands.rb:73:in `tap'
2013-09-27T03:20:26.476250+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0/lib/rails/commands.rb:78:in `block in <top (required)>'
2013-09-27T03:20:26.476460+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0/lib/rails/commands.rb:73:in `<top (required)>'
2013-09-27T03:20:26.476460+00:00 app[web.1]:    bin/rails:4:in `<main>'
2013-09-27T03:20:26.476460+00:00 app[web.1]:    bin/rails:4:in `require'
2013-09-27T03:20:26.476460+00:00 app[web.1]: [2013-09-27 03:20:26] INFO  WEBrick::HTTPServer#start done.
2013-09-27T03:20:27.106260+00:00 heroku[web.1]: Starting process with command `bin/rails server -p 45016 -e $RAILS_ENV`
2013-09-27T03:20:28.127830+00:00 heroku[web.1]: Process exited with status 143
2013-09-27T03:20:29.833226+00:00 app[web.1]: [2013-09-27 03:20:29] INFO  WEBrick::HTTPServer#start: pid=2 port=45016
2013-09-27T03:20:29.833042+00:00 app[web.1]: [2013-09-27 03:20:29] INFO  WEBrick 1.3.1
2013-09-27T03:20:29.833042+00:00 app[web.1]: [2013-09-27 03:20:29] INFO  ruby 2.0.0 (2013-06-27) [x86_64-linux]
2013-09-27T03:20:30.342155+00:00 heroku[web.1]: State changed from starting to up




$ heroku run rake db:migrate
Running `rake db:migrate` attached to terminal... up, run.2103

$ heroku logs

2013-09-27T03:16:03.823477+00:00 app[web.1]: => Rails 4.0.0 application starting in production on http://0.0.0.0:10413
2013-09-27T03:16:03.823477+00:00 app[web.1]: => Ctrl-C to shutdown server
2013-09-27T03:16:03.823477+00:00 app[web.1]: => Run `rails server -h` for more startup options
2013-09-27T03:16:03.823477+00:00 app[web.1]: Started GET "/" for 69.204.243.201 at 2013-09-27 03:16:03 +0000
2013-09-27T03:16:04.145839+00:00 app[web.1]: NoMethodError (undefined method `player_1' for nil:NilClass):
2013-09-27T03:16:04.145839+00:00 app[web.1]:   app/controllers/static_pages_controller.rb:5:in `home'
2013-09-27T03:16:04.145839+00:00 app[web.1]: 
2013-09-27T03:16:04.145839+00:00 app[web.1]:   app/controllers/static_pages_controller.rb:5:in `home'
2013-09-27T03:16:04.145839+00:00 app[web.1]: 
2013-09-27T03:16:04.145839+00:00 app[web.1]: NoMethodError (undefined method `player_1' for nil:NilClass):
2013-09-27T03:16:04.145839+00:00 app[web.1]: 
2013-09-27T03:16:04.145839+00:00 app[web.1]: 
2013-09-27T03:16:04.145839+00:00 app[web.1]: 
2013-09-27T03:16:04.145839+00:00 app[web.1]: 
2013-09-27T03:16:04.438096+00:00 heroku[router]: at=info method=GET path=/favicon.ico host=guarded-dawn-5794.herokuapp.com fwd="69.204.243.201" dyno=web.1 connect=1ms service=11ms status=200 bytes=0
2013-09-27T03:16:19.959728+00:00 heroku[run.8653]: Awaiting client
2013-09-27T03:16:19.993002+00:00 heroku[run.8653]: Starting process with command `bundle exec rake db:migrate`
2013-09-27T03:16:21.287810+00:00 heroku[run.8653]: State changed from starting to up
2013-09-27T03:16:23.769398+00:00 heroku[run.8653]: Process exited with status 0
2013-09-27T03:16:23.781951+00:00 heroku[run.8653]: State changed from up to complete
2013-09-27T03:16:24.450472+00:00 app[web.1]: Started GET "/" for 69.204.243.201 at 2013-09-27 03:16:24 +0000
2013-09-27T03:16:24.450472+00:00 app[web.1]: Started GET "/" for 69.204.243.201 at 2013-09-27 03:16:24 +0000
2013-09-27T03:16:24.495722+00:00 app[web.1]: NoMethodError (undefined method `player_1' for nil:NilClass):
2013-09-27T03:16:24.495722+00:00 app[web.1]:   app/controllers/static_pages_controller.rb:5:in `home'
2013-09-27T03:16:24.495722+00:00 app[web.1]: 
2013-09-27T03:16:24.495722+00:00 app[web.1]: 
2013-09-27T03:16:24.495722+00:00 app[web.1]: 
2013-09-27T03:16:24.495722+00:00 app[web.1]:   app/controllers/static_pages_controller.rb:5:in `home'
2013-09-27T03:16:24.495722+00:00 app[web.1]: 
2013-09-27T03:16:24.495722+00:00 app[web.1]: NoMethodError (undefined method `player_1' for nil:NilClass):
2013-09-27T03:16:24.495722+00:00 app[web.1]: 
2013-09-27T03:16:24.495722+00:00 app[web.1]: 
2013-09-27T03:16:24.527866+00:00 heroku[router]: at=info method=GET path=/ host=guarded-dawn-5794.herokuapp.com fwd="69.204.243.201" dyno=web.1 connect=1ms service=55ms status=500 bytes=706
2013-09-27T03:16:24.573935+00:00 heroku[router]: at=info method=GET path=/favicon.ico host=guarded-dawn-5794.herokuapp.com fwd="69.204.243.201" dyno=web.1 connect=4ms service=7ms status=304 bytes=0
2013-09-27T03:16:25.628352+00:00 app[web.1]: Started GET "/" for 69.204.243.201 at 2013-09-27 03:16:25 +0000
2013-09-27T03:16:25.628352+00:00 app[web.1]: Started GET "/" for 69.204.243.201 at 2013-09-27 03:16:25 +0000
2013-09-27T03:16:25.641704+00:00 app[web.1]: 
2013-09-27T03:16:25.641704+00:00 app[web.1]: 
2013-09-27T03:16:25.641704+00:00 app[web.1]:   app/controllers/static_pages_controller.rb:5:in `home'
2013-09-27T03:16:25.641704+00:00 app[web.1]: NoMethodError (undefined method `player_1' for nil:NilClass):
2013-09-27T03:16:25.641704+00:00 app[web.1]: 
2013-09-27T03:16:25.641704+00:00 app[web.1]: 
2013-09-27T03:16:25.641704+00:00 app[web.1]: 
2013-09-27T03:16:25.641704+00:00 app[web.1]:   app/controllers/static_pages_controller.rb:5:in `home'
2013-09-27T03:16:25.641704+00:00 app[web.1]: NoMethodError (undefined method `player_1' for nil:NilClass):
2013-09-27T03:16:25.641704+00:00 app[web.1]: 
2013-09-27T03:16:04.160724+00:00 heroku[router]: at=info method=GET path=/ host=guarded-dawn-5794.herokuapp.com fwd="69.204.243.201" dyno=web.1 connect=2ms service=339ms status=500 bytes=706
2013-09-27T03:12:57.743462+00:00 heroku[run.5279]: State changed from starting to up
2013-09-27T03:16:25.645210+00:00 heroku[router]: at=info method=GET path=/ host=guarded-dawn-5794.herokuapp.com fwd="69.204.243.201" dyno=web.1 connect=2ms service=23ms status=500 bytes=706
2013-09-27T03:16:14.901595+00:00 heroku[api]: Starting process with command `bundle exec rake db:migrate` by jackerman09@gmail.com
2013-09-27T03:19:55+00:00 heroku[slug-compiler]: Slug compilation started
2013-09-27T03:20:21.685120+00:00 heroku[api]: Deploy 5a25d1e by jackerman09@gmail.com
2013-09-27T03:20:21.740188+00:00 heroku[api]: Release v8 created by jackerman09@gmail.com
2013-09-27T03:20:22+00:00 heroku[slug-compiler]: Slug compilation finished
2013-09-27T03:20:25.654702+00:00 heroku[web.1]: Stopping all processes with SIGTERM
2013-09-27T03:20:26.476250+00:00 app[web.1]:    /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/webrick/server.rb:160:in `start'
2013-09-27T03:20:26.476250+00:00 app[web.1]: [2013-09-27 03:20:26] FATAL SignalException: SIGTERM
2013-09-27T03:20:26.476250+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/handler/webrick.rb:14:in `run'
2013-09-27T03:20:26.476250+00:00 app[web.1]:    /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/webrick/server.rb:170:in `select'
2013-09-27T03:20:26.476250+00:00 app[web.1]:    /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/webrick/server.rb:170:in `block in start'
2013-09-27T03:20:26.476250+00:00 app[web.1]:    /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/webrick/server.rb:32:in `start'
2013-09-27T03:20:26.476250+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0/lib/rails/commands/server.rb:84:in `start'
2013-09-27T03:20:26.476460+00:00 app[web.1]: [2013-09-27 03:20:26] INFO  going to shutdown ...
2013-09-27T03:20:26.476460+00:00 app[web.1]: Exiting
2013-09-27T03:20:26.476250+00:00 app[web.1]:    /app/vend
or/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/server.rb:264:in `start'
2013-09-27T03:20:26.476250+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0/lib/rails/commands.rb:73:in `tap'
2013-09-27T03:20:26.476250+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0/lib/rails/commands.rb:78:in `block in <top (required)>'
2013-09-27T03:20:26.476460+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/railties-4.0.0/lib/rails/commands.rb:73:in `<top (required)>'
2013-09-27T03:20:26.476460+00:00 app[web.1]:    bin/rails:4:in `<main>'
2013-09-27T03:20:26.476460+00:00 app[web.1]:    bin/rails:4:in `require'
2013-09-27T03:20:26.476460+00:00 app[web.1]: [2013-09-27 03:20:26] INFO  WEBrick::HTTPServer#start done.
2013-09-27T03:20:27.106260+00:00 heroku[web.1]: Starting process with command `bin/rails server -p 45016 -e $RAILS_ENV`
2013-09-27T03:20:28.127830+00:00 heroku[web.1]: Process exited with status 143
2013-09-27T03:20:29.833226+00:00 app[web.1]: [2013-09-27 03:20:29] INFO  WEBrick::HTTPServer#start: pid=2 port=45016
2013-09-27T03:20:29.833042+00:00 app[web.1]: [2013-09-27 03:20:29] INFO  WEBrick 1.3.1
2013-09-27T03:20:29.833042+00:00 app[web.1]: [2013-09-27 03:20:29] INFO  ruby 2.0.0 (2013-06-27) [x86_64-linux]
2013-09-27T03:20:30.342155+00:00 heroku[web.1]: State changed from starting to up
2013-09-27T03:22:08.966343+00:00 heroku[run.2103]: Awaiting client
2013-09-27T03:22:09.015540+00:00 heroku[run.2103]: Starting process with command `bundle exec rake db:migrate`
2013-09-27T03:22:10.380038+00:00 heroku[run.2103]: State changed from starting to up
2013-09-27T03:22:14.044020+00:00 heroku[run.2103]: Process exited with status 0
2013-09-27T03:22:14.061930+00:00 heroku[run.2103]: State changed from up to complete
2013-09-27T03:22:02.468822+00:00 heroku[api]: Starting process with command `bundle exec rake db:migrate` by jackerman09@gmail.com
2013-09-27T03:22:20.272871+00:00 app[web.1]: Started GET "/" for 69.204.243.201 at 2013-09-27 03:22:20 +0000
2013-09-27T03:22:20.272871+00:00 app[web.1]: => Booting WEBrick
2013-09-27T03:22:20.272871+00:00 app[web.1]: => Run `rails server -h` for more startup options
2013-09-27T03:22:20.272871+00:00 app[web.1]: => Rails 4.0.0 application starting in production on http://0.0.0.0:45016
2013-09-27T03:22:20.272871+00:00 app[web.1]: Started GET "/" for 69.204.243.201 at 2013-09-27 03:22:20 +0000
2013-09-27T03:22:20.272871+00:00 app[web.1]: => Ctrl-C to shutdown server
2013-09-27T03:22:20.829092+00:00 heroku[router]: at=info method=GET path=/ host=guarded-dawn-5794.herokuapp.com fwd="69.204.243.201" dyno=web.1 connect=104ms service=569ms status=500 bytes=706
2013-09-27T03:22:20.811256+00:00 app[web.1]: 
2013-09-27T03:22:20.811256+00:00 app[web.1]: 
2013-09-27T03:22:20.811256+00:00 app[web.1]: 
2013-09-27T03:22:20.811256+00:00 app[web.1]: NoMethodError (undefined method `player_1' for nil:NilClass):
2013-09-27T03:22:20.811256+00:00 app[web.1]:   app/controllers/static_pages_controller.rb:5:in `home'
2013-09-27T03:22:20.811256+00:00 app[web.1]: NoMethodError (undefined method `player_1' for nil:NilClass):
2013-09-27T03:22:20.811256+00:00 app[web.1]:   app/controllers/static_pages_controller.rb:5:in `home'
2013-09-27T03:22:20.811256+00:00 app[web.1]: 
2013-09-27T03:22:20.811256+00:00 app[web.1]: 
2013-09-27T03:22:20.811256+00:00 app[web.1]: 
2013-09-27T03:22:21.056314+00:00 heroku[router]: at=info method=GET path=/favicon.ico host=guarded-dawn-5794.herokuapp.com fwd="69.204.243.201" dyno=web.1 connect=1ms service=8ms status=200 bytes=0

【问题讨论】：

  • 您使用的是哪个数据库？在本地运行应用时是否有任何异常
  • 我在开发中使用 SQLite3，在生产中使用 PG。我的应用在本地运行时运行流畅。

标签： ruby-on-rails git heroku deployment


【解决方案1】：

您需要关注的错误如下：NoMethodError (undefined method `player_1' for nil:NilClass)

虽然您已迁移数据库，但本地数据库中的数据不会在生产数据库中。方法 player_1 被调用的对象为 nil，很可能是本地数据库中不为 nil 的对象，因为在部署之前您会在本地看到错误。

在 db/seeds.rb 中构建种子文件，您只需运行以下命令即可将数据导入生产数据库：

heroku run rake db:seed

在种子文件中，您可以像在应用程序的其他地方一样在数据库表中创建行：

@user = User.create(username: 'ryanfrancis', email: 'ryan@example.com', password: 'password', password_confirmation: 'password')
@user.save

【讨论】：

  • 谢谢，我实际上只是这样做了，错误消息更改为“您要查找的页面不存在”。我可以导航到显示的 myapp.com/players（另一个页面），但未显示根页面。对此有何想法？
  • 您的本地主机上是否正确加载了页面？与您的根页面关联的操作中是否存在任何可能导致应用重定向到另一个页面的条件？
  • 它在本地运行良好，没有条件。我记得在某个地方读到 Heroku 不喜欢 root 到：在 routes.rb 中，但是 root 没问题，但是，我进行了更改，但仍然无法正常工作，所以我仍然卡住了。
  • 在 heroku.com 上，将 papertrail 插件添加到您的应用程序中，这将使您能够查看服务器日志。再次启动错误，看看是否可以通过日志找到更具描述性的错误消息。
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