我正在尝试使用Mongoid/Devise Rails 3.1模板(Mongoid和Devise),并且我不断收到错误,指出ExecJS无法找到JavaScript运行时.当我没有安装任何东西时足够公平,但我已经尝试安装Node.js,Mustang和Ruby Racer,但没有任何工作.
我找不到JavaScript运行时.有关可用运行时()的列表,请参见sstephenson/ExecJS(GitHub ExecJS::RuntimeUnavailable).
为了让这个工作,我需要做什么？
我rails 3.1.0.rc4在我的本地机器上创建了一个新的Rails项目但是当我尝试启动服务器时,我得到:找不到JavaScript运行时.有关可用运行时的列表,请参见此处.(ExecJS::RuntimeUnavailable)
注意:这不是关于Heroku的.
javascript ruby-on-rails node.js ruby-on-rails-3 ruby-on-rails-3.1
我正在关注新的Ubuntu 12.10上的ruby on rails入门指南.我要运行rake db:create但是我收到以下错误:
耙子流产了!找不到JavaScript运行时.有关可用运行时的列表,请参阅https://github.com/sstephenson/execjs.
我一直在搜索,建议的解决方案(见下面列表)是安装一些therubyracer或nodejs,但他们没有解释原因.
在我安装之前我想知道这些JavaScript运行时之间的差异以及为什么我会选择其中一个？
更新:
我刚看了https://github.com/sstephenson/execjs(我知道我应该先读这个,对不起)在我看来,execjs不是一个JavaScript运行时而且我已经拥有它...所以它归结为therubyracer和nodejs ...请原谅我的无知,我已经修改了我的问题
除了Intrepidd的回答:
轨道上的红宝石入门指南支持Intrepidd的答案.请参见4.1"启动Web服务器"一节,其中说:
Rails在一个注释行中为新应用添加了therubyracer gem到Gemfile,如果需要,你可以取消注释.
对于那里的导轨noob(像我一样),GemFile位于rails应用程序的根文件夹中.在我的GemFile中取消注释该行后,我必须运行bundle install以安装therubyracer gem.
我一直在尝试使用Rails,当我使用rake时,我得到了这个错误.我应该使用哪些运行时间的建议？
ngzhongqin@ngzhongqin-linux:~/RailsProjects/webuiltit$ rake db:create:all --trace
rake aborted!
Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes.
/home/ngzhongqin/.rvm/gems/ruby-1.9.2-p290/gems/execjs-1.2.4/lib/execjs/runtimes.rb:45:in `autodetect'
/home/ngzhongqin/.rvm/gems/ruby-1.9.2-p290/gems/execjs-1.2.4/lib/execjs.rb:5:in `<module:ExecJS>'
/home/ngzhongqin/.rvm/gems/ruby-1.9.2-p290/gems/execjs-1.2.4/lib/execjs.rb:4:in `<top (required)>'
/home/ngzhongqin/.rvm/gems/ruby-1.9.2-p290/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in `require'
/home/ngzhongqin/.rvm/gems/ruby-1.9.2-p290/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in `<top (required)>'
/home/ngzhongqin/.rvm/gems/ruby-1.9.2-p290/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in `require'
/home/ngzhongqin/.rvm/gems/ruby-1.9.2-p290/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in `<top (required)>'
/home/ngzhongqin/.rvm/gems/ruby-1.9.2-p290/gems/coffee-rails-3.1.0/lib/coffee-rails.rb:1:in `require'
/home/ngzhongqin/.rvm/gems/ruby-1.9.2-p290/gems/coffee-rails-3.1.0/lib/coffee-rails.rb:1:in `<top (required)>'
/home/ngzhongqin/.rvm/gems/ruby-1.9.2-p290/gems/bundler-1.0.18/lib/bundler/runtime.rb:68:in `require'
/home/ngzhongqin/.rvm/gems/ruby-1.9.2-p290/gems/bundler-1.0.18/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
/home/ngzhongqin/.rvm/gems/ruby-1.9.2-p290/gems/bundler-1.0.18/lib/bundler/runtime.rb:66:in `each'
/home/ngzhongqin/.rvm/gems/ruby-1.9.2-p290/gems/bundler-1.0.18/lib/bundler/runtime.rb:66:in `block in require'
/home/ngzhongqin/.rvm/gems/ruby-1.9.2-p290/gems/bundler-1.0.18/lib/bundler/runtime.rb:55:in `each'
/home/ngzhongqin/.rvm/gems/ruby-1.9.2-p290/gems/bundler-1.0.18/lib/bundler/runtime.rb:55:in `require'
/home/ngzhongqin/.rvm/gems/ruby-1.9.2-p290/gems/bundler-1.0.18/lib/bundler.rb:120:in `require'
/home/ngzhongqin/RailsProjects/webuiltit/config/application.rb:13:in `<top (required)>'
/home/ngzhongqin/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
/home/ngzhongqin/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
/home/ngzhongqin/RailsProjects/webuiltit/Rakefile:5:in `<top (required)>'
/home/ngzhongqin/.rvm/gems/ruby-1.9.2-p290/gems/rake-0.9.2/lib/rake/rake_module.rb:25:in `load'
/home/ngzhongqin/.rvm/gems/ruby-1.9.2-p290/gems/rake-0.9.2/lib/rake/rake_module.rb:25:in `load_rakefile'
/home/ngzhongqin/.rvm/gems/ruby-1.9.2-p290/gems/rake-0.9.2/lib/rake/application.rb:495:in `raw_load_rakefile'
/home/ngzhongqin/.rvm/gems/ruby-1.9.2-p290/gems/rake-0.9.2/lib/rake/application.rb:78:in …