请帮助我。我注意到这个问题已经被问到了几次，没有答案。我已经尝试了我所看到的解决方案，并且没有解决方案。
我正在从一本书中学习Ruby，这是" Rails速成课程：Ruby on Rails on Ruby on Ruby on Rails"。
当我输入Heroku Open
时，我的问题就来了浏览器打开，我会收到以下消息
您要寻找的页面不存在。您可能已经误解了地址，或者页面可能已经移动。如果您是应用程序所有者，请检查日志以获取更多信息。
我已经运行了我的日志
2017-12-03T19:48:51.187449+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/middleware/cookies.rb:613:in `call'
2017-12-03T19:48:51.187450+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/callbacks.rb:97:in `run_callbacks'
2017-12-03T19:48:51.187450+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/middleware/callbacks.rb:26:in `block in call'
2017-12-03T19:48:51.187451+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/middleware/callbacks.rb:24:in `call'
2017-12-03T19:48:51.187452+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/middleware/debug_exceptions.rb:59:in `call'
2017-12-03T19:48:51.187452+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/middleware/show_exceptions.rb:31:in `call'
2017-12-03T19:48:51.187453+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/rack/logger.rb:24:in `block in call'
2017-12-03T19:48:51.187453+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/rack/logger.rb:36:in `call_app'
2017-12-03T19:48:51.187454+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/tagged_logging.rb:69:in `block in tagged'
2017-12-03T19:48:51.187708+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/tagged_logging.rb:26:in `tagged'
2017-12-03T19:48:51.187710+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/tagged_logging.rb:69:in `tagged'
2017-12-03T19:48:51.187711+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/middleware/remote_ip.rb:79:in `call'
2017-12-03T19:48:51.187711+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/rack/logger.rb:24:in `call'
2017-12-03T19:48:51.187712+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/middleware/request_id.rb:25:in `call'
2017-12-03T19:48:51.187713+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/rack-2.0.3/lib/rack/method_override.rb:22:in `call'
2017-12-03T19:48:51.187717+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/cache/strategy/local_cache_middleware.rb:27:in `call'
2017-12-03T19:48:51.187714+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/rack-2.0.3/lib/rack/runtime.rb:22:in `call'
2017-12-03T19:48:51.187717+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/middleware/executor.rb:12:in `call'
2017-12-03T19:48:51.187718+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/middleware/static.rb:125:in `call'
2017-12-03T19:48:51.187719+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/rack-2.0.3/lib/rack/sendfile.rb:111:in `call'
2017-12-03T19:48:51.187719+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/engine.rb:522:in `call'
2017-12-03T19:48:51.187720+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/puma-3.11.0/lib/puma/configuration.rb:225:in `call'
2017-12-03T19:48:51.187721+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/puma-3.11.0/lib/puma/server.rb:624:in `handle_request'
2017-12-03T19:48:51.187721+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/puma-3.11.0/lib/puma/server.rb:438:in `process_client'
2017-12-03T19:48:51.187722+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/puma-3.11.0/lib/puma/server.rb:302:in `block in run'
2017-12-03T19:48:51.187723+00:00 app[web.1]: [076125bd-21fe-447f-98e8-2036caa4a683] vendor/bundle/ruby/2.3.0/gems/puma-3.11.0/lib/puma/thread_pool.rb:120:in `block in spawn_thread'
2017-12-03T20:03:43.644271+00:00 heroku[worker.1]: State changed from crashed to starting
2017-12-03T20:03:46.386095+00:00 heroku[worker.1]: Starting process with command `bundle exec rake jobs:work`
2017-12-03T20:03:46.976688+00:00 heroku[worker.1]: State changed from starting to up
2017-12-03T20:03:49.186838+00:00 app[worker.1]: rake aborted!
2017-12-03T20:03:49.186858+00:00 app[worker.1]: Don't know how to build task 'jobs:work' (see --tasks)
2017-12-03T20:03:49.187090+00:00 app[worker.1]: /app/vendor/bundle/ruby/2.3.0/gems/bundler-1.15.2/lib/bundler/cli/exec.rb:74:in `load'
2017-12-03T20:03:49.187091+00:00 app[worker.1]: /app/vendor/bundle/ruby/2.3.0/gems/bundler-1.15.2/lib/bundler/cli/exec.rb:74:in `kernel_load'
2017-12-03T20:03:49.187091+00:00 app[worker.1]: /app/vendor/bundle/ruby/2.3.0/gems/bundler-1.15.2/lib/bundler/cli/exec.rb:27:in `run'
2017-12-03T20:03:49.187092+00:00 app[worker.1]: /app/vendor/bundle/ruby/2.3.0/gems/bundler-1.15.2/lib/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
2017-12-03T20:03:49.187093+00:00 app[worker.1]: /app/vendor/bundle/ruby/2.3.0/gems/bundler-1.15.2/lib/bundler/vendor/thor/lib/thor/invocation.rb:126:in `invoke_command'
2017-12-03T20:03:49.187092+00:00 app[worker.1]: /app/vendor/bundle/ruby/2.3.0/gems/bundler-1.15.2/lib/bundler/cli.rb:360:in `exec'
2017-12-03T20:03:49.187089+00:00 app[worker.1]: /app/vendor/bundle/ruby/2.3.0/gems/rake-12.3.0/exe/rake:27:in `<top (required)>'
2017-12-03T20:03:49.187094+00:00 app[worker.1]: /app/vendor/bundle/ruby/2.3.0/gems/bundler-1.15.2/lib/bundler/vendor/thor/lib/thor/base.rb:444:in `start'
2017-12-03T20:03:49.187095+00:00 app[worker.1]: /app/vendor/bundle/ruby/2.3.0/gems/bundler-1.15.2/lib/bundler/cli.rb:10:in `start'
2017-12-03T20:03:49.187095+00:00 app[worker.1]: /app/vendor/bundle/ruby/2.3.0/gems/bundler-1.15.2/exe/bundle:30:in `block in <top (required)>'
2017-12-03T20:03:49.187097+00:00 app[worker.1]: /app/bin/bundle:3:in `<main>'
2017-12-03T20:03:49.187094+00:00 app[worker.1]: /app/vendor/bundle/ruby/2.3.0/gems/bundler-1.15.2/lib/bundler/cli.rb:20:in `dispatch'
2017-12-03T20:03:49.187099+00:00 app[worker.1]: (See full trace by running task with --trace)
2017-12-03T20:03:49.187096+00:00 app[worker.1]: /app/vendor/bundle/ruby/2.3.0/gems/bundler-1.15.2/lib/bundler/friendly_errors.rb:121:in `with_friendly_errors'
2017-12-03T20:03:49.187097+00:00 app[worker.1]: /app/bin/bundle:3:in `load'
2017-12-03T20:03:49.187096+00:00 app[worker.1]: /app/vendor/bundle/ruby/2.3.0/gems/bundler-1.15.2/exe/bundle:22:in `<top (required)>'
2017-12-03T20:03:49.187094+00:00 app[worker.1]: /app/vendor/bundle/ruby/2.3.0/gems/bundler-1.15.2/lib/bundler/vendor/thor/lib/thor.rb:369:in `dispatch'
2017-12-03T20:03:49.337634+00:00 heroku[worker.1]: State changed from up to crashed
2017-12-03T20:03:49.326887+00:00 heroku[worker.1]: Process exited with status 1
2017-12-03T20:06:51.940770+00:00 heroku[router]: at=info method=GET path="/" host=mightymixer.herokuapp.com request_id=cf3559e7-f176-4ddd-848e-ae08dede69ce fwd="104.152.232.201" dyno=web.1 connect=2ms service=10ms status=404 bytes=1902 protocol=https
2017-12-03T20:06:51.943218+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] Started GET "/" for 104.152.232.201 at 2017-12-03 20:06:51 +0000
2017-12-03T20:06:51.945172+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce]
2017-12-03T20:06:51.945204+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] ActionController::RoutingError (uninitialized constant PostController):
2017-12-03T20:06:51.945237+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce]
2017-12-03T20:06:51.945371+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/inflector/methods.rb:269:in `const_get'
2017-12-03T20:06:51.945377+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/inflector/methods.rb:267:in `inject'
2017-12-03T20:06:51.945374+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/inflector/methods.rb:269:in `block in constantize'
2017-12-03T20:06:51.945376+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/inflector/methods.rb:267:in `each'
2017-12-03T20:06:51.945378+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/inflector/methods.rb:267:in `constantize'
2017-12-03T20:06:51.945379+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/dependencies.rb:582:in `get'
2017-12-03T20:06:51.945380+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/dependencies.rb:613:in `constantize'
2017-12-03T20:06:51.945381+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/http/request.rb:85:in `controller_class_for'
2017-12-03T20:06:51.945381+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/http/request.rb:78:in `controller_class'
2017-12-03T20:06:51.945382+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/routing/route_set.rb:43:in `controller'
2017-12-03T20:06:51.945383+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/routing/route_set.rb:29:in `serve'
2017-12-03T20:06:51.945384+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/journey/router.rb:50:in `block in serve'
2017-12-03T20:06:51.945385+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/journey/router.rb:33:in `each'
2017-12-03T20:06:51.945385+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/journey/router.rb:33:in `serve'
2017-12-03T20:06:51.945388+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/rack-2.0.3/lib/rack/etag.rb:25:in `call'
2017-12-03T20:06:51.945386+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/routing/route_set.rb:834:in `call'
2017-12-03T20:06:51.945391+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/rack-2.0.3/lib/rack/session/abstract/id.rb:232:in `context'
2017-12-03T20:06:51.945389+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/rack-2.0.3/lib/rack/conditional_get.rb:25:in `call'
2017-12-03T20:06:51.945390+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/rack-2.0.3/lib/rack/head.rb:12:in `call'
2017-12-03T20:06:51.945392+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/rack-2.0.3/lib/rack/session/abstract/id.rb:226:in `call'
2017-12-03T20:06:51.945393+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/middleware/callbacks.rb:26:in `block in call'
2017-12-03T20:06:51.945392+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/middleware/cookies.rb:613:in `call'
2017-12-03T20:06:51.945394+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/callbacks.rb:97:in `run_callbacks'
2017-12-03T20:06:51.945395+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/middleware/callbacks.rb:24:in `call'
2017-12-03T20:06:51.945396+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/middleware/show_exceptions.rb:31:in `call'
2017-12-03T20:06:51.945397+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/rack/logger.rb:36:in `call_app'
2017-12-03T20:06:51.945395+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/middleware/debug_exceptions.rb:59:in `call'
2017-12-03T20:06:51.945398+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/rack/logger.rb:24:in `block in call'
2017-12-03T20:06:51.945398+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/tagged_logging.rb:69:in `block in tagged'
2017-12-03T20:06:51.945410+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/tagged_logging.rb:26:in `tagged'
2017-12-03T20:06:51.945411+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/tagged_logging.rb:69:in `tagged'
2017-12-03T20:06:51.945412+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/rack/logger.rb:24:in `call'
2017-12-03T20:06:51.945412+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/middleware/remote_ip.rb:79:in `call'
2017-12-03T20:06:51.945413+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/middleware/request_id.rb:25:in `call'
2017-12-03T20:06:51.945414+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/rack-2.0.3/lib/rack/method_override.rb:22:in `call'
2017-12-03T20:06:51.945415+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/rack-2.0.3/lib/rack/runtime.rb:22:in `call'
2017-12-03T20:06:51.945417+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.4/lib/active_support/cache/strategy/local_cache_middleware.rb:27:in `call'
2017-12-03T20:06:51.945417+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/middleware/executor.rb:12:in `call'
2017-12-03T20:06:51.945418+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/actionpack-5.1.4/lib/action_dispatch/middleware/static.rb:125:in `call'
2017-12-03T20:06:51.945419+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/rack-2.0.3/lib/rack/sendfile.rb:111:in `call'
2017-12-03T20:06:51.945420+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/puma-3.11.0/lib/puma/configuration.rb:225:in `call'
2017-12-03T20:06:51.945420+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/railties-5.1.4/lib/rails/engine.rb:522:in `call'
2017-12-03T20:06:51.945422+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/puma-3.11.0/lib/puma/server.rb:438:in `process_client'
2017-12-03T20:06:51.945421+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/puma-3.11.0/lib/puma/server.rb:624:in `handle_request'
2017-12-03T20:06:51.945423+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/puma-3.11.0/lib/puma/server.rb:302:in `block in run'
2017-12-03T20:06:51.945424+00:00 app[web.1]: [cf3559e7-f176-4ddd-848e-ae08dede69ce] vendor/bundle/ruby/2.3.0/gems/puma-3.11.0/lib/puma/thread_pool.rb:120:in `block in spawn_thread'
任何帮助都会很棒！
发布控制器
class PostsController < ApplicationController
before_action :set_post, only: [:show, :edit, :update, :destroy]
# GET /posts
# GET /posts.json
def index
@posts = Post.all
end
# GET /posts/1
# GET /posts/1.json
def show
end
# GET /posts/new
def new
@post = Post.new
end
# GET /posts/1/edit
def edit
end
# POST /posts
# POST /posts.json
def create
@post = Post.new(post_params)
respond_to do |format|
if @post.save
format.html { redirect_to @post, notice: 'Post was successfully created.' }
format.json { render :show, status: :created, location: @post }
else
format.html { render :new }
format.json { render json: @post.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /posts/1
# PATCH/PUT /posts/1.json
def update
respond_to do |format|
if @post.update(post_params)
format.html { redirect_to @post, notice: 'Post was successfully updated.' }
format.json { render :show, status: :ok, location: @post }
else
format.html { render :edit }
format.json { render json: @post.errors, status: :unprocessable_entity }
end
end
end
# DELETE /posts/1
# DELETE /posts/1.json
def destroy
@post.destroy
respond_to do |format|
format.html { redirect_to posts_url, notice: 'Post was successfully destroyed.' }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_post
@post = Post.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def post_params
params.require(:post).permit(:title, :author, :body)
end
end
错误日志在您的帖子控制器中说有问题，
ActionController :: RoutingError（非初始化常数 PostController）：
如果您可以通过邮政控制器更新问题，那么您可以很容易地获得帮助或自己查看它，因为您可以解决