我在Ruby on Rails教程第一章的部署部分，我无法让事情奏效！我正在使用Cloud9工作区。
我的Gemfile是：
source 'https://rubygems.org'
ruby '2.2.1'
gem 'rails', '4.2.0'
gem 'sass-rails', '5.0.1'
gem 'uglifier', '2.5.3'
gem 'coffee-rails', '4.1.0'
gem 'jquery-rails', '4.0.3'
gem 'turbolinks', '2.3.0'
gem 'jbuilder', '2.2.3'
gem 'sdoc', '0.4.0', group: :doc
group :development, :test do
gem 'sqlite3', '1.3.9'
gem 'byebug', '3.4.0'
gem 'web-console', '2.0.0.beta3'
gem 'spring', '1.1.3'
end
group :production do
gem 'pg', '0.17.1'
gem 'rails_12factor', '0.0.2'
end
我的Heroku安装日志是：
-----> Ruby app detected
-----> Compiling Ruby/Rails
-----> Using Ruby version: ruby-2.2.1
-----> Installing dependencies using 1.9.7
Ruby version change detected. Clearing bundler cache.
Old: ruby 2.0.0p645 (2015-04-13 revision 50299) [x86_64-linux]
New: ruby 2.2.1p85 (2015-02-26 revision 49769) [x86_64-linux]
Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin -j4 --deployment
Fetching gem metadata from https://rubygems.org/...........
Fetching version metadata from https://rubygems.org/...
Fetching dependency metadata from https://rubygems.org/..
Using rake 10.4.2
Installing minitest 5.7.0
Installing i18n 0.7.0
Installing builder 3.2.2
Installing thread_safe 0.3.5
Installing mini_portile 0.6.2
Installing erubis 2.7.0
Installing rack 1.6.4
Installing mime-types 2.6.1
Installing coffee-script-source 1.9.1.1
Installing arel 6.0.2
Installing json 1.8.3
Installing execjs 2.5.2
Installing thor 0.19.1
Using bundler 1.9.7
Installing multi_json 1.11.2
Installing rails_stdout_logging 0.0.3
Using rdoc 4.2.0
Installing rails_serve_static_assets 0.0.4
Installing tilt 1.4.1
Installing sass 3.4.16
Installing tzinfo 1.2.2
Installing rack-test 0.6.3
Installing sprockets 3.2.0
Installing mail 2.6.3
Installing coffee-script 2.4.1
Installing uglifier 2.5.3
Installing sdoc 0.4.0
Installing rails_12factor 0.0.2
Installing activesupport 4.2.0
Installing rails-deprecated_sanitizer 1.0.3
Installing globalid 0.3.5
Installing activemodel 4.2.0
Installing jbuilder 2.2.3
Installing activejob 4.2.0
Installing activerecord 4.2.0
Installing pg 0.17.1
Installing nokogiri 1.6.6.2
Installing loofah 2.0.2
Installing rails-dom-testing 1.0.6
Installing rails-html-sanitizer 1.0.2
Installing actionview 4.2.0
Installing actionpack 4.2.0
Installing sprockets-rails 2.3.2
Installing actionmailer 4.2.0
Installing railties 4.2.0
Installing coffee-rails 4.1.0
Installing jquery-rails 4.0.3
Installing rails 4.2.0
Installing sass-rails 5.0.1
Installing turbolinks 2.3.0
Bundle complete! 14 Gemfile dependencies, 51 gems now installed.
Gems in the groups development and test were not installed.
Bundled gems are installed into ./vendor/bundle.
Bundle completed (35.52s)
Cleaning up the bundler cache.
Could not detect rake tasks
ensure you can run `$ bundle exec rake -P` against your app with no environment variables present
and using the production group of your Gemfile.
rake aborted!
NameError: uninitialized constant Sass::Script
/tmp/build_e66783d527b235cf6db9221a52037d9b/vendor/bundle/ruby/2.2.0/gems/sass-rails-5.0.1/lib/sass/rails/helpers.rb:11:in `<top (required)>'
/tmp/build_e66783d527b235cf6db9221a52037d9b/vendor/bundle/ruby/2.2.0/gems/sass-rails-5.0.1/lib/sass/rails.rb:8:in `require'
/tmp/build_e66783d527b235cf6db9221a52037d9b/vendor/bundle/ruby/2.2.0/gems/sass-rails-5.0.1/lib/sass/rails.rb:8:in `<top (required)>'
/tmp/build_e66783d527b235cf6db9221a52037d9b/vendor/bundle/ruby/2.2.0/gems/sass-rails-5.0.1/lib/sass-rails.rb:1:in `require'
/tmp/build_e66783d527b235cf6db9221a52037d9b/vendor/bundle/ruby/2.2.0/gems/sass-rails-5.0.1/lib/sass-rails.rb:1:in `<top (required)>'
/tmp/build_e66783d527b235cf6db9221a52037d9b/vendor/bundle/ruby/2.2.0/gems/bundler-1.9.7/lib/bundler/runtime.rb:76:in `require'
/tmp/build_e66783d527b235cf6db9221a52037d9b/vendor/bundle/ruby/2.2.0/gems/bundler-1.9.7/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
/tmp/build_e66783d527b235cf6db9221a52037d9b/vendor/bundle/ruby/2.2.0/gems/bundler-1.9.7/lib/bundler/runtime.rb:72:in `each'
/tmp/build_e66783d527b235cf6db9221a52037d9b/vendor/bundle/ruby/2.2.0/gems/bundler-1.9.7/lib/bundler/runtime.rb:72:in `block in require'
/tmp/build_e66783d527b235cf6db9221a52037d9b/vendor/bundle/ruby/2.2.0/gems/bundler-1.9.7/lib/bundler/runtime.rb:61:in `each'
/tmp/build_e66783d527b235cf6db9221a52037d9b/vendor/bundle/ruby/2.2.0/gems/bundler-1.9.7/lib/bundler/runtime.rb:61:in `require'
/tmp/build_e66783d527b235cf6db9221a52037d9b/vendor/bundle/ruby/2.2.0/gems/bundler-1.9.7/lib/bundler.rb:134:in `require'
/tmp/build_e66783d527b235cf6db9221a52037d9b/config/application.rb:7:in `<top (required)>'
/tmp/build_e66783d527b235cf6db9221a52037d9b/Rakefile:4:in `require'
/tmp/build_e66783d527b235cf6db9221a52037d9b/Rakefile:4:in `<top (required)>'
/tmp/build_e66783d527b235cf6db9221a52037d9b/vendor/ruby-2.2.1/lib/ruby/2.2.0/rake/rake_module.rb:28:in `load'
/tmp/build_e66783d527b235cf6db9221a52037d9b/vendor/ruby-2.2.1/lib/ruby/2.2.0/rake/rake_module.rb:28:in `load_rakefile'
/tmp/build_e66783d527b235cf6db9221a52037d9b/vendor/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:689:in `raw_load_rakefile'
/tmp/build_e66783d527b235cf6db9221a52037d9b/vendor/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:94:in `block in load_rakefile'
/tmp/build_e66783d527b235cf6db9221a52037d9b/vendor/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:176:in `standard_exception_handling'
/tmp/build_e66783d527b235cf6db9221a52037d9b/vendor/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:93:in `load_rakefile'
/tmp/build_e66783d527b235cf6db9221a52037d9b/vendor/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:77:in `block in run'
/tmp/build_e66783d527b235cf6db9221a52037d9b/vendor/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:176:in `standard_exception_handling'
/tmp/build_e66783d527b235cf6db9221a52037d9b/vendor/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:75:in `run'
/tmp/build_e66783d527b235cf6db9221a52037d9b/vendor/ruby-2.2.1/lib/ruby/gems/2.2.0/gems/rake-10.4.2/bin/rake:33:in `<top (required)>'
vendor/bundle/bin/rake:16:in `load'
vendor/bundle/bin/rake:16:in `<main>'
###### WARNING:
No Procfile detected, using the default web server (webrick)
https://devcenter.heroku.com/articles/ruby-default-web-server
-----> Discovering process types
Procfile declares types -> (none)
Default types for Ruby -> console, rake, web, worker
-----> Compressing... done, 29.1MB
-----> Launching... done, v6
https://lit-caverns-5466.herokuapp.com/ deployed to Heroku
当我打开链接时，我收到消息：
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.
答案 0 :(得分：0)
您的应用是否在本地production模式下成功运行？如果没有尝试在生产模式下本地运行您的应用程序，您可能能够发现问题。
bundle install --without development:test
RAILS_ENV=production rake db:create db:migrate
RAILS_ENV=production rails s