“找不到 JavaScript 运行时。”在执行refinerycms 命令期间答案

【问题标题】："Could not find a JavaScript runtime." during executing the refinerycms command“找不到 JavaScript 运行时。”在执行refinerycms 命令期间
【发布时间】：2012-10-24 00:43:42
【问题描述】：

我正在开发 Ubuntu 12.04。

我正在尝试使用 Refinery CMS 创建一个新网站。我阅读了the official Getting Started guide，并执行了以下命令。

$ refinerycms rickrockstar

但我收到以下错误消息：

Your bundle is complete! Use `bundle show [gemname]` to see where a bundled gem is installed.
        rake db:create
rake aborted!
Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes.

(See full trace by running task with --trace)
    generate refinery:cms --fresh-installation
/home/jharai/.rvm/gems/ruby-1.9.3-p0/gems/execjs-1.4.0/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/jharai/.rvm/gems/ruby-1.9.3-p0/gems/execjs-1.4.0/lib/execjs.rb:5:in `<module:ExecJS>'
        from /home/jharai/.rvm/gems/ruby-1.9.3-p0/gems/execjs-1.4.0/lib/execjs.rb:4:in `<top (required)>'
        from /home/jharai/.rvm/gems/ruby-1.9.3-p0/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in `require'
        from /home/jharai/.rvm/gems/ruby-1.9.3-p0/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in `<top (required)>'
        from /home/jharai/.rvm/gems/ruby-1.9.3-p0/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in `require'
        from /home/jharai/.rvm/gems/ruby-1.9.3-p0/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in `<top (required)>'
        from /home/jharai/.rvm/gems/ruby-1.9.3-p0/gems/coffee-rails-3.2.2/lib/coffee-rails.rb:1:in `require'
        from /home/jharai/.rvm/gems/ruby-1.9.3-p0/gems/coffee-rails-3.2.2/lib/coffee-rails.rb:1:in `<top (required)>'
        from /home/jharai/.rvm/gems/ruby-1.9.3-p0/gems/bundler-1.2.1/lib/bundler/runtime.rb:68:in `require'
        from /home/jharai/.rvm/gems/ruby-1.9.3-p0/gems/bundler-1.2.1/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
        from /home/jharai/.rvm/gems/ruby-1.9.3-p0/gems/bundler-1.2.1/lib/bundler/runtime.rb:66:in `each'
        from /home/jharai/.rvm/gems/ruby-1.9.3-p0/gems/bundler-1.2.1/lib/bundler/runtime.rb:66:in `block in require'
        from /home/jharai/.rvm/gems/ruby-1.9.3-p0/gems/bundler-1.2.1/lib/bundler/runtime.rb:55:in `each'
        from /home/jharai/.rvm/gems/ruby-1.9.3-p0/gems/bundler-1.2.1/lib/bundler/runtime.rb:55:in `require'
        from /home/jharai/.rvm/gems/ruby-1.9.3-p0/gems/bundler-1.2.1/lib/bundler.rb:128:in `require'
        from /srv/samba/share/refinery2test/rickrockstar/config/application.rb:13:in `<top (required)>'
        from /home/jharai/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.8/lib/rails/commands.rb:24:in `require'
        from /home/jharai/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.8/lib/rails/commands.rb:24:in `<top (required)>'
        from script/rails:6:in `require'
        from script/rails:6:in `<main>'

我在 Gist 上粘贴了 the entire output，因为它太长了。

奇怪的是，几天前我尝试了相同的命令，当时一切正常。

为什么会这样？我该如何解决？

【问题讨论】：

我发布了一个关于问题原因的问题。 github.com/refinery/refinerycms/issues/2001

标签： refinerycms

【解决方案1】：

也许您可以sudo apt-get install nodejs 或查看此帖子ExecJS and could not find a JavaScript runtime

【讨论】：

【解决方案2】：

我解决了这个问题：

运行 refinerycms rickrockstar - 它将失败，但出现您描述的异常
编辑 rickrockstar/Gemfile 并取消注释 *gem 'therubyracer', :platforms => :ruby* 并保存更改；
再次运行 refinerycms rickrockstar
Gemfile 将发生冲突并询问您是否要覆盖它。回答不；
覆盖其他有冲突的文件
cd rickrockstar
导轨

【讨论】：