我在 Rails 4 应用程序部署中收到 NameError: uninitialized constant CoffeeScript::ExecJS

Question

我在我的 Digital Ocean LAM-Rails VPS 上部署了一个 Rails 4 应用程序。我已经开发了很长一段时间，一切进展顺利，但是现在当我想运行迁移或清理资产时，我收到了这个错误：

NameError: uninitialized constant CoffeeScript::ExecJS
/usr/local/rvm/gems/ruby-2.1.1/gems/coffee-script-2.3.0/lib/coffee_script.rb:5:in `<module:CoffeeScript>'
/usr/local/rvm/gems/ruby-2.1.1/gems/coffee-script-2.3.0/lib/coffee_script.rb:4:in `<top (required)>'
/usr/local/rvm/gems/ruby-2.1.1/gems/coffee-script-2.3.0/lib/coffee-script.rb:1:in `require'
/usr/local/rvm/gems/ruby-2.1.1/gems/coffee-script-2.3.0/lib/coffee-script.rb:1:in `<top (required)>'
/usr/local/rvm/gems/ruby-2.1.1/gems/coffee-rails-4.0.1/lib/coffee-rails.rb:1:in `require'
/usr/local/rvm/gems/ruby-2.1.1/gems/coffee-rails-4.0.1/lib/coffee-rails.rb:1:in `<top (required)>'
/usr/local/rvm/gems/ruby-2.1.1@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:76:in `require'
/usr/local/rvm/gems/ruby-2.1.1@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
/usr/local/rvm/gems/ruby-2.1.1@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:72:in `each'
/usr/local/rvm/gems/ruby-2.1.1@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:72:in `block in require'
/usr/local/rvm/gems/ruby-2.1.1@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:61:in `each'
/usr/local/rvm/gems/ruby-2.1.1@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:61:in `require'
/usr/local/rvm/gems/ruby-2.1.1@global/gems/bundler-1.6.2/lib/bundler.rb:132:in `require'
/var/www/html/kosarka/config/application.rb:7:in `<top (required)>'
/var/www/html/kosarka/Rakefile:4:in `require'
/var/www/html/kosarka/Rakefile:4:in `<top (required)>'
/usr/local/rvm/gems/ruby-2.1.1/bin/ruby_executable_hooks:15:in `eval'
/usr/local/rvm/gems/ruby-2.1.1/bin/ruby_executable_hooks:15:in `<main>'
(See full trace by running task with --trace)

我的 Gem 文件如下所示：

source 'https://rubygems.org'

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.1.0'
# Use sqlite3 as the database for Active Record
group :development do
    gem 'sqlite3'
end
group :production do
    gem 'mysql2'
    gem 'therubyracer',  platforms: :ruby
    gem 'execjs'
end

#To validate delivery date is in the futurebund
gem 'date_validator'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 4.0.3'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .js.coffee assets and views
gem 'coffee-rails', '~> 4.0.0'
# See https://github.com/sstephenson/execjs#readme for more supported runtimes
# gem 'therubyracer',  platforms: :ruby
# Use Paperclip for image upload
gem 'paperclip'
# Use jquery as the JavaScript library
gem 'jquery-rails'

gem 'jquery-turbolinks'

gem 'jquery-ui-rails'
# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.0'
# bundle exec rake doc:rails generates the API under doc/api.
gem 'sdoc', '~> 0.4.0',          group: :doc

# Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
gem 'spring',        group: :development

# For development on Windows machines
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw]

# Use ActiveModel has_secure_password
gem 'bcrypt', '~> 3.1.7'

# Use unicorn as the app server
# gem 'unicorn'

# Use Capistrano for deployment
gem 'capistrano-rails', group: :development

# Use debugger
# gem 'debugger', group: [:development, :test]

我在 Win7 机器和 Mac 上都开发了这个应用程序，我在开发环境中运行它没有问题。

我在服务器上使用 Phusion Passenger，通常只是使用 .sh 脚本提取 repo 内容，然后运行 ​​rake migrate asset clean 和预编译命令。

任何帮助将不胜感激。

Answer 1

替换此部分：

group :production do
    gem 'mysql2'
    gem 'therubyracer',  platforms: :ruby
    gem 'execjs'
end

到

gem 'mysql2'
gem 'therubyracer',  platforms: :ruby
gem 'execjs'

附：我认为如果没有execjs gem，您的应用程序也可以正常工作。尝试检查它是否有任何情况。

Answer 2

这将是一个相当模糊的答案。我在 stackOverflow 上看到很多人提出过这个问题，但提示（rm -rf .bundle 和缓存等）对我没有帮助。

所以我只是恢复到旧的 Gem 文件和 Gem.lock，它恰好解决了问题。

然后我去了 Bitbucket 并查看了提交并发现实际上是 Gem.lock 中的所有版本更改（可能是意外的包更新而不是包安装）可能导致问题。

尽管在我的 Gemfile 中只有一个 date_validator 更改，但我的 Gem.lock 中充满了以下新版本：

bcrypt
capistrano
coffee-script-source
execjs
multi_json
jbuilder
spring

我仍然无法深入问题，但至少想出了如何避免它。