Question

我试图运行rails generate rspec:install，但我收到此错误。我使用的是ruby 2.0.0p353和Rails 4.0.3。

错误是：

/home/adminuser/.rvm/gems/ruby-2.0.0-p353/gems/execjs-2.0.2/lib/execjs/runtimes.rb:51:in autodetect': Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable) from /home/adminuser/.rvm/gems/ruby-2.0.0-p353/gems/execjs-2.0.2/lib/execjs.rb:5:in＆＃39; 来自/home/adminuser/.rvm/gems/ruby-2.0.0-p353/gems/execjs-2.0.2/lib/execjs.rb:4:in <top (required)>' from /home/adminuser/.rvm/gems/ruby-2.0.0-p353/gems/uglifier-2.4.0/lib/uglifier.rb:3:in要求＆＃39; 来自/home/adminuser/.rvm/gems/ruby-2.0.0-p353/gems/uglifier-2.4.0/lib/uglifier.rb:3:in <top (required)>' from /home/adminuser/.rvm/gems/ruby-2.0.0-p353@global/gems/bundler-1.3.5/lib/bundler/runtime.rb:72:in要求＆＃39; 来自/home/adminuser/.rvm/gems/ruby-2.0.0-p353@global/gems/bundler-1.3.5/lib/bundler/runtime.rb:72:in block (2 levels) in require' from /home/adminuser/.rvm/gems/ruby-2.0.0-p353@global/gems/bundler-1.3.5/lib/bundler/runtime.rb:70:in每个＆＃39; 来自/home/adminuser/.rvm/gems/ruby-2.0.0-p353@global/gems/bundler-1.3.5/lib/bundler/runtime.rb:70:in block in require' from /home/adminuser/.rvm/gems/ruby-2.0.0-p353@global/gems/bundler-1.3.5/lib/bundler/runtime.rb:59:in每个＆＃39; 来自/home/adminuser/.rvm/gems/ruby-2.0.0-p353@global/gems/bundler-1.3.5/lib/bundler/runtime.rb:59:in require' from /home/adminuser/.rvm/gems/ruby-2.0.0-p353@global/gems/bundler-1.3.5/lib/bundler.rb:132:in要求＆＃39; 来自/home/adminuser/Desktop/667-workspace/assignment_3/config/application.rb:12:in <top (required)>' from /home/adminuser/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/commands.rb:43:in要求＆＃39; 来自/home/adminuser/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/commands.rb:43:in <top (required)>' from bin/rails:4:in要求＆＃39; 来自bin / rails：4：在`＆＃39;

Answer 1

正如错误所示，您需要在本地计算机上使用JavaScript的运行时（解释器）（不，浏览器中的那些不会）。

你可以通过安装诸如therubyracer之类的宝石或像'sudo apt-get install nodejs'之类的运行命令来实现这一目的

Answer 2

只需在项目中添加运行时

# Gemfile
gem 'therubyracer'

Answer 3

您需要安装therubyracer或nodejs才能运行rails生成器。我更喜欢nodejs，因为它可以用于其他情况，例如bower或npm

＆＃34; rails生成rspec：install＆＃34;失败

3 个答案: