Cloud 9的Rails教程错误 [英] Rails Tutorial Error With Cloud 9

问题描述

试图使其正常工作，但遇到了麻烦。我正在按照以下说明进行操作：
https://www.railstutorial.org / book / beginning＃cha-beginning

Trying to get this to work, but I'm having trouble. I'm following the instructions at: https://www.railstutorial.org/book/beginning#cha-beginning

我到达1.3.2并输入：

I get to 1.3.2 and I type:

rails server -b $IP -p $PORT

导致此错误而不是运行WEBrick：

Which results in this error instead of WEBrick running:

/usr/local/rvm/gems/ruby-2.1.5@rails4/gems/sass-rails-5.0.1/lib/sass/rails/helpers.rb:11:in `<top (required)>': uninitialized constant Sass::Script (NameError)
        from /usr/local/rvm/gems/ruby-2.1.5@rails4/gems/sass-rails-5.0.1/lib/sass/rails.rb:8:in `require'
        from /usr/local/rvm/gems/ruby-2.1.5@rails4/gems/sass-rails-5.0.1/lib/sass/rails.rb:8:in `<top (required)>'
        from /usr/local/rvm/gems/ruby-2.1.5@rails4/gems/sass-rails-5.0.1/lib/sass-rails.rb:1:in `require'
        from /usr/local/rvm/gems/ruby-2.1.5@rails4/gems/sass-rails-5.0.1/lib/sass-rails.rb:1:in `<top (required)>'
        from /usr/local/rvm/gems/ruby-2.1.5@global/gems/bundler-1.7.6/lib/bundler/runtime.rb:76:in `require'
        from /usr/local/rvm/gems/ruby-2.1.5@global/gems/bundler-1.7.6/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
        from /usr/local/rvm/gems/ruby-2.1.5@global/gems/bundler-1.7.6/lib/bundler/runtime.rb:72:in `each'
        from /usr/local/rvm/gems/ruby-2.1.5@global/gems/bundler-1.7.6/lib/bundler/runtime.rb:72:in `block in require'
        from /usr/local/rvm/gems/ruby-2.1.5@global/gems/bundler-1.7.6/lib/bundler/runtime.rb:61:in `each'
        from /usr/local/rvm/gems/ruby-2.1.5@global/gems/bundler-1.7.6/lib/bundler/runtime.rb:61:in `require'
        from /usr/local/rvm/gems/ruby-2.1.5@global/gems/bundler-1.7.6/lib/bundler.rb:133:in `require'
        from /home/ubuntu/workspace/hello_app/config/application.rb:7:in `<top (required)>'
        from /usr/local/rvm/gems/ruby-2.1.5@rails4/gems/railties-4.2.0/lib/rails/commands/commands_tasks.rb:78:in `require'
        from /usr/local/rvm/gems/ruby-2.1.5@rails4/gems/railties-4.2.0/lib/rails/commands/commands_tasks.rb:78:in `block in server'
        from /usr/local/rvm/gems/ruby-2.1.5@rails4/gems/railties-4.2.0/lib/rails/commands/commands_tasks.rb:75:in `tap'
        from /usr/local/rvm/gems/ruby-2.1.5@rails4/gems/railties-4.2.0/lib/rails/commands/commands_tasks.rb:75:in `server'
        from /usr/local/rvm/gems/ruby-2.1.5@rails4/gems/railties-4.2.0/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
        from /usr/local/rvm/gems/ruby-2.1.5@rails4/gems/railties-4.2.0/lib/rails/commands.rb:17:in `<top (required)>'
        from /home/ubuntu/workspace/hello_app/bin/rails:8:in `require'
        from /home/ubuntu/workspace/hello_app/bin/rails:8:in `<top (required)>'
        from /usr/local/rvm/gems/ruby-2.1.5@rails4/gems/spring-1.1.3/lib/spring/client/rails.rb:27:in `load'
        from /usr/local/rvm/gems/ruby-2.1.5@rails4/gems/spring-1.1.3/lib/spring/client/rails.rb:27:in `call'
        from /usr/local/rvm/gems/ruby-2.1.5@rails4/gems/spring-1.1.3/lib/spring/client/command.rb:7:in `call'
        from /usr/local/rvm/gems/ruby-2.1.5@rails4/gems/spring-1.1.3/lib/spring/client.rb:26:in `run'
        from /usr/local/rvm/gems/ruby-2.1.5@rails4/gems/spring-1.1.3/bin/spring:48:in `<top (required)>'
        from /usr/local/rvm/gems/ruby-2.1.5@rails4/gems/spring-1.1.3/lib/spring/binstub.rb:11:in `load'
        from /usr/local/rvm/gems/ruby-2.1.5@rails4/gems/spring-1.1.3/lib/spring/binstub.rb:11:in `<top (required)>'
        from /home/ubuntu/workspace/hello_app/bin/spring:13:in `require'
        from /home/ubuntu/workspace/hello_app/bin/spring:13:in `<top (required)>'
        from bin/rails:3:in `load'
        from bin/rails:3:in `<main>'

这似乎仅在用指定的代码替换Gemfile代码以获取露骨的Ruby gem的显式版本时发生（以下代码）。

This seems to only happen when you replace the Gemfile code with the code specified to get the explicit version of Ruby gems (the code below).

源' https://rubygems.org '

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

推荐答案

就像本教程一样最近落伍了。如果您从

Looks like the tutorial has just recently fallen out of date. If you update your gemfile from

gem 'sass-rails',           '5.0.1'

到

gem 'sass-rails',           '5.0.2'

然后再次安装捆绑并启动服务器，它应该可以正常工作精细。

then bundle install again and launch the server, it should work just fine.

（如果愿意，也可以通过添加

(If you prefer, you can also run a workaround by adding

gem 'sass', '3.4.13'

在您现有的未更新行之前：

before your existing, non-updated line:

gem 'sass-rails',           '5.0.1'

在您的gemfile中，并进行捆绑安装并启动服务器。不过，我不知道您为什么需要这样做。）

in your gemfile, and doing a bundle install and launching the server. I don't know why you'd need to, though.)

这篇关于Cloud 9的Rails教程错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！