我收到此错误:
耙中止!找不到 JavaScript 运行时。见https://github.com/sstephenson/execjs,
我已经花了更多时间搜索谷歌然后我愿意承认。我相信这是一个 execJs 错误。
在所有帖子中,这是 rails 3.1 的一个非常常见的问题。现在像咖啡脚本和 sass 这样的标准 gem 现在需要一个 js 运行时。
通过将 gem 'execjs' 和 'therubyracer' 添加到应用程序 Gemfile,然后运行 'bundle update' 和/或 'bundle install' 来解决大多数情况。但不适合我。
我想我很幸运。我在旧版本的 Redhat Linux 4 (2.6.9-101.ELsmp) 上运行 rails 3.1.3/ruby 1.9,而 gcc 是 3.4.6。
其他报告的修复没有帮助,我无法安装“nodejs”、“johnson”或“mustang”,其他运行时 execJs 应该定位和使用。他们不会在我的系统上制作/安装。
我需要解决导致 execJs 无法找到“therubyracer”的问题。这是 Gemfile(并且 bundle install 说好的):
source 'http://rubygems.org'
gem 'rails', '3.1.3'
gem 'sqlite3'
gem 'sho-mongrel'
gem 'execjs'
gem 'therubyracer'
#gem "therubyracer", :require => 'v8'
group :assets do
gem 'sass-rails', '~> 3.1.5'
gem 'coffee-rails', '~> 3.1.1'
gem 'uglifier', '>= 1.0.3'
end
这是一个痕迹:
~/rails/316-private-pub/chatter-after>rake db:create --trace
rake aborted!
Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes.
/usr/local/lib/ruby/gems/1.9.1/gems/execjs-1.3.0/lib/execjs/runtimes.rb:50:in `autodetect'
/usr/local/lib/ruby/gems/1.9.1/gems/execjs-1.3.0/lib/execjs.rb:5:in `<module:ExecJS>'
/usr/local/lib/ruby/gems/1.9.1/gems/execjs-1.3.0/lib/execjs.rb:4:in `<top (required)>'
/usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.21/lib/bundler/runtime.rb:68:in `require'
/usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.21/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
/usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.21/lib/bundler/runtime.rb:66:in `each'
/usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.21/lib/bundler/runtime.rb:66:in `block in require'
/usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.21/lib/bundler/runtime.rb:55:in `each'
/usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.21/lib/bundler/runtime.rb:55:in `require'
/usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.21/lib/bundler.rb:122:in `require'
/home/vitalarthur/rails/316-private-pub/chatter-after/config/application.rb:7:in `<top (required)>'
/usr/local/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
/usr/local/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
/home/vitalarthur/rails/316-private-pub/chatter-after/Rakefile:5:in `<top (required)>'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/rake_module.rb:25:in `load'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/rake_module.rb:25:in `load_rakefile'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:501:in `raw_load_rakefile'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:82:in `block in load_rakefile'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:81:in `load_rakefile'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:65:in `block in run'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run'
/usr/local/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/bin/rake:33:in `<top (required)>'
/usr/local/bin/rake:19:in `load'
/usr/local/bin/rake:19:in `<main>'
开发日志中没有任何有趣的内容。
这是 execjs 目录:
/usr/local/lib/ruby/gems/1.9.1/gems/execjs-1.3.0/lib/execjs>ls
disabled_runtime.rb module.rb ruby_rhino_runtime.rb version.rb
external_runtime.rb mustang_runtime.rb runtimes.rb
johnson_runtime.rb ruby_racer_runtime.rb
我也试过 execjs-1.2.13。同样的问题。
如果我在下面评论 execjs.rb,我可以运行 rake 而不会出现错误:
require "execjs/module"
require "execjs/runtimes"
module ExecJS
self.runtime #||= Runtimes.autodetect
end
但是我没有运行时。
我可以在 runtimes.rb 中看到错误文本的来源:
def self.autodetect
from_environment || best_available ||
raise(RuntimeUnavailable, "Could not find a JavaScript runtime. " +
"See https://github.com/sstephenson/execjs for a list of available runtimes.")
end
所以问题是,既然我确实安装了“therubyracer”,为什么runtimes.rb 找不到它?execJs 坏了吗?
这里是“therubyracer”:
/usr/local/lib/ruby/gems/1.9.1/gems/therubyracer-0.9.9
我怎样才能解决这个问题?