编辑：一般的建议是使用CEDAR堆栈.
对RoR,Gems,Heroku和Git来说很新.以下教程：http://ruby.railstutorial.org/book/ruby-on-rails-tutorial
在localhost上顺利运行,当部署到Heroku时遇到ConnectionNotEstablished错误,这在这里解决了：
https://stackoverflow.com/questions/7542745/heroku-error-activerecordconnectionnotestablished(BTW：遵循相同的教程)将生产数据库更改为PostgreSQL(gem’pg’)后,它会生成另一个错误：
Visting live site
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.
试过这个 –
Heroku app crashed,receiving “Invalid DATABASE URL” when attempting heroku rake db:migrate –
heroku rake db：migrate
rake aborted! Invalid DATABASE_URL Tasks: TOP => db:migrate => db:load_config (See full trace by running task with --trace)
heroku控制台
Internal server error
的Gemfile
source 'http://rubygems.org'
gem 'rails','3.1.1'
group :development do
gem 'rspec-rails','2.6.1'
gem 'annotate','~> 2.4.1.beta'
gem 'sqlite3'
end
group :test do
gem 'rspec-rails','2.6.1'
gem 'webrat','0.7.1'
gem 'sqlite3'
end
group :production do
gem 'pg'
end
group :assets do
gem 'sass-rails','~> 3.1.4'
gem 'coffee-rails','~> 3.1.1'
gem 'uglifier','>= 1.0.3'
end
heroku日志
9:02+00:00 app[web.1]: from /usr/ruby1.9.2/lib/ruby/gems/1.9.1/gems/thin-1.2.6/lib/thin/runner.rb:143:in `run!' 9:02+00:00 app[web.1]: from /usr/ruby1.9.2/lib/ruby/gems/1.9.1/gems/thin-1.2.6/bin/thin:6:in `<top (required)>' 9:02+00:00 app[web.1]: from /usr/ruby1.9.2/lib/ruby/gems/1.9.1/gems/thin-1.2.6/lib/thin/runner.rb:177:in `run_command' 9:02+00:00 app[web.1]: from /home/heroku_rack/heroku.ru:18:in `block (2 levels) in <main>' 9:02+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/rack-1.3.6/lib/rack/builder.rb:51:in `initialize' 9:02+00:00 app[web.1]: from /usr/ruby1.9.2/bin/thin:19:in `<main>' 9:02+00:00 app[web.1]: from /usr/ruby1.9.2/bin/thin:19:in `load' 9:03+00:00 heroku[web.1]: State changed from starting to crashed 9:04+00:00 heroku[web.1]: Process exited 1:58+00:00 heroku[slugc]: Slug compilation started 3:09+00:00 heroku[api]: Deploy 3dea426 by mstefanow@gmail.com 3:09+00:00 heroku[api]: Release v7 created by mstefanow@gmail.com 3:09+00:00 heroku[web.1]: State changed from crashed to created 3:09+00:00 heroku[web.1]: State changed from created to starting 3:10+00:00 heroku[slugc]: Slug compilation finished 3:12+00:00 heroku[web.1]: Starting process with command `thin -p 44881 -e production -R /home/heroku_rack/heroku.ru start` 3:15+00:00 app[web.1]: (erb):9:in `rescue in <main>': Invalid DATABASE_URL (RuntimeError) 3:15+00:00 app[web.1]: from (erb):6:in `<main>' 3:15+00:00 app[web.1]: from /usr/ruby1.9.2/lib/ruby/1.9.1/erb.rb:753:in `eval' 3:15+00:00 app[web.1]: from /usr/ruby1.9.2/lib/ruby/1.9.1/erb.rb:753:in `result' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/application/configuration.rb:106:in `database_configuration' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:36:in `instance_eval' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.1.1/lib/active_record/railtie.rb:68:in `block (2 levels) in <class:Railtie>' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:36:in `execute_hook' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:43:in `block in run_load_hooks' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:42:in `each' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:42:in `run_load_hooks' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.1.1/lib/active_record/base.rb:2190:in `<top (required)>' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:240:in `require' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:240:in `block in require' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:225:in `load_dependency' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:240:in `require' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:489:in `load_missing_constant' 3:15+00:00 app[web.1]: from /app/app/models/user.rb:12:in `<top (required)>' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:179:in `each' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:179:in `const_missing' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/inflector/methods.rb:124:in `block in constantize' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/inflector/methods.rb:123:in `each' 3:15+00:00 a from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/inflector/methods.rb:123:in `constantize' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/core_ext/string/inflections.rb:43:in `constantize' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:348:in `require_or_load' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:181:in `block in const_missing' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/actionpack-3.1.1/lib/action_controller/metal/params_wrapper.rb:148:in `_default_wrap_model' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/actionpack-3.1.1/lib/action_controller/metal/params_wrapper.rb:167:in `_set_wrapper_defaults' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/actionpack-3.1.1/lib/action_controller/metal/params_wrapper.rb:128:in `inherited' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/actionpack-3.1.1/lib/abstract_controller/railties/routes_helpers.rb:7:in `block (2 levels) in wi 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/actionpack-3.1.1/lib/action_controller/railties/paths.rb:7:in `block (2 levels) in with' 3:15+00:00 app[web.1]: from /app/app/controllers/users_controller.rb:1:in `<top (required)>' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:240:in `block in require' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:225:in `load_dependency' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:240:in `require' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:240:in `require' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:348:in `require_or_load' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:302:in `depend_on' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:214:in `require_dependency' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/engine.rb:417:in `block (2 levels) in eager_load!' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/engine.rb:416:in `each' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/engine.rb:416:in `block in eager_load!' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/engine.rb:414:in `each' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/engine.rb:414:in `eager_load!' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/application/finisher.rb:51:in `block in <module:Finisher>' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/initializable.rb:30:in `instance_exec' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/initializable.rb:30:in `run' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/initializable.rb:55:in `block in run_initializers' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/initializable.rb:54:in `each' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/initializable.rb:54:in `run_initializers' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/application.rb:96:in `initialize!' 3:15+00:00 app[web.1]: from /app/config/environment.rb:5:in `<top (required)>' 3:15+00:00 app[web.1]: from <internal:lib/rubygems/custom_require>:29:in `require' 3:15+00:00 app[web.1]: from <internal:lib/rubygems/custom_require>:29:in `require' 3:15+00:00 app[web.1]: from config.ru:3:in `block (3 levels) in <main>' 3:15+00:00 app[web.1]: from /home/heroku_rack/heroku.ru:23:in `eval' 3:15+00:00 app[web.1]: from /home/heroku_rack/heroku.ru:23:in `block (3 levels) in <main>' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/railties-3.1.1/lib/rails/railtie/configurable.rb:30:in `method_missing' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/rack-1.3.6/lib/rack/builder.rb:120:in `new' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/rack-1.3.6/lib/rack/builder.rb:120:in `map' 3:15+00:00 app[web.1]: from /home/heroku_rack/heroku.ru:18:in `block (2 levels) in <main>' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/rack-1.3.6/lib/rack/builder.rb:51:in `instance_eval' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/rack-1.3.6/lib/rack/builder.rb:51:in `initialize' 3:15+00:00 app[web.1]: from /home/heroku_rack/heroku.ru:11:in `new' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/rack-1.3.6/lib/rack/builder.rb:51:in `instance_eval' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/rack-1.3.6/lib/rack/builder.rb:51:in `initialize' 3:15+00:00 app[web.1]: from /home/heroku_rack/heroku.ru:11:in `block in <main>' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/rack-1.3.6/lib/rack/builder.rb:51:in `instance_eval' 3:15+00:00 app[web.1]: from /app/.bundle/gems/ruby/1.9.1/gems/rack-1.3.6/lib/rack/builder.rb:51:in `initialize' 3:15+00:00 app[web.1]: from /home/heroku_rack/heroku.ru:1:in `new' 3:15+00:00 app[web.1]: from /home/heroku_rack/heroku.ru:1:in `<main>' 3:15+00:00 app[web.1]: from /usr/ruby1.9.2/lib/ruby/gems/1.9.1/gems/thin-1.2.6/lib/rack/adapter/loader.rb:36:in `eval' 3:15+00:00 app[web.1]: from /usr/ruby1.9.2/lib/ruby/gems/1.9.1/gems/thin-1.2.6/lib/rack/adapter/loader.rb:36:in `load' 3:15+00:00 app[web.1]: from /usr/ruby1.9.2/lib/ruby/gems/1.9.1/gems/thin-1.2.6/lib/thin/controllers/controller.rb:175:in `load_rackup_config' 3:15+00:00 app[web.1]: from /usr/ruby1.9.2/lib/ruby/gems/1.9.1/gems/thin-1.2.6/lib/thin/controllers/controller.rb:65:in `start' 3:15+00:00 app[web.1]: from /usr/ruby1.9.2/lib/ruby/gems/1.9.1/gems/thin-1.2.6/lib/thin/runner.rb:143:in `run!' 3:15+00:00 app[web.1]: from /usr/ruby1.9.2/lib/ruby/gems/1.9.1/gems/thin-1.2.6/bin/thin:6:in `<top (required)>' 3:15+00:00 app[web.1]: from /usr/ruby1.9.2/bin/thin:19:in `load' 3:15+00:00 app[web.1]: from /usr/ruby1.9.2/bin/thin:19:in `<main>' 3:15+00:00 app[web.1]: from /usr/ruby1.9.2/lib/ruby/gems/1.9.1/gems/thin-1.2.6/lib/thin/runner.rb:177:in `run_command' 3:16+00:00 heroku[web.1]: State changed from starting to crashed 3:17+00:00 heroku[web.1]: Process exited 5:55+00:00 heroku[router]: Error H10 (App crashed) -> GET high-wind-7473.heroku.com/pages/home dyno= queue= wait= service= status=503 bytes= 5:57+00:00 heroku[router]: Error H10 (App crashed) -> GET high-wind-7473.heroku.com/pages/home dyno= queue= wait= service= status=503 bytes=
卡住了,请帮忙(指向正确的方向)
当然
bundle install git add . git commit -m "another heroku fix" git push git push heroku
解决方法
您需要将DATABASE_URL环境变量设置为在线postgres db的路径.
尝试运行heroku pg.如果输出是“myapp没有heroku-postgresql数据库”.那么你需要先添加PostgreSQL插件.它将在Amazon AWS上为您创建一个postgres数据库.
heroku addons:add heroku-postgresql:hobby-basic
(业余爱好 – 基本是免费计划)
要查找新数据库的URL,请运行
heroku config
您应该看到一个以HEROKU_POSTGRESQL开头的变量.复制它的值(它应该以postgres：//开头并用它来设置DATABASE_URL
heroku config:set DATABASE_URL=postgres://your-db-url
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