Ruby on Rails -在Debian上安装execjs

Question

我正在尝试在debian上安装ruby on rails ...我把所有东西都装上了。

我还安装了execjs、therubyracer和node.js。

每次我想创建一个新的控制器时，它都会说：

/usr/local/lib/ruby/gems/2.0.0/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 /usr/local/lib/ruby/gems/2.0.0/gems/execjs-2.0.2/lib/execjs.rb:5:in `<module:ExecJS>'
    from /usr/local/lib/ruby/gems/2.0.0/gems/execjs-2.0.2/lib/execjs.rb:4:in `<top (required)>'
    from /usr/local/lib/ruby/gems/2.0.0/gems/uglifier-2.2.1/lib/uglifier.rb:3:in `require'
    from /usr/local/lib/ruby/gems/2.0.0/gems/uglifier-2.2.1/lib/uglifier.rb:3:in `<top (required)>'
    from /usr/local/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler/runtime.rb:72:in `require'
    from /usr/local/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler/runtime.rb:72:in `block (2 levels) in require'
    from /usr/local/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler/runtime.rb:70:in `each'
    from /usr/local/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler/runtime.rb:70:in `block in require'
    from /usr/local/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler/runtime.rb:59:in `each'
    from /usr/local/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler/runtime.rb:59:in `require'
    from /usr/local/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler.rb:132:in `require'
    from /home/adattilo/test/testt/config/application.rb:7:in `<top (required)>'
    from /usr/local/lib/ruby/gems/2.0.0/gems/railties-4.0.0/lib/rails/commands.rb:44:in `require'
    from /usr/local/lib/ruby/gems/2.0.0/gems/railties-4.0.0/lib/rails/commands.rb:44:in `<top (required)>'
    from bin/rails:4:in `require'
    from bin/rails:4:in `<main>'

在安装了execjs、therubyracer和node.js之后，我重新启动了系统。

Answer 1

对于有可用的二进制版本的therubyracer gem的平台，除了ruby和rubygems之外没有其他依赖项。如果您的系统没有二进制版本，那么您需要从源代码编译它。为此，您必须在系统中的某个位置安装v8 > 3.11.8。

尝试将以下内容添加到Gemfile中

gem 'therubyracer', '0.11.0beta5'
gem 'libv8', '~> 3.11.8'

现在，cd到你的项目和包安装

$ cd <project>
$ bundle install