Guard给予"未初始化的常量Listen :: Turnstile(NameError)"错误

Question

我在尝试运行命令时遇到此错误:

guard

这个应用程序我在试图安装后卫之前已经开发了一段时间......

我按照Ryan Bates关于后卫的教程的指示:

http://railscasts.com/episodes/264-guard

这是我的Gem文件.

source 'https://rubygems.org'

gem 'rails', '3.2.14'
gem 'rake'
gem 'mysql2'
gem 'bcrypt-ruby'
gem 'devise'
gem 'rails_admin'
gem 'jbuilder'
gem 'gon'
gem 'dynamic_form'
gem 'therubyracer', :require => 'v8'
gem 'jquery-rails'
gem 'jquery-ui-rails'
gem 'rails3-jquery-autocomplete'
gem 'roo'

group :assets do
  gem 'sass-rails', '~> 3.2.4'
  gem 'coffee-script', '~> 2.2.0'
  gem 'uglifier', '~> 1.2.3'
end

group :development, :test do
  gem 'capistrano'
  gem 'bullet'
  gem 'rvm-capistrano'
  gem 'better_errors'
  gem 'rspec-rails', '2.10.0'
  gem 'awesome_print'
  gem 'wirble'
  gem 'thin'
  gem 'guard-rspec'
  gem 'rb-fsevent', :require => false if RUBY_PLATFORM =~ /darwin/i  
end

group :test do
  gem 'capybara', '1.1.2'
  gem 'faker'
  gem 'factory_girl_rails'
  gem 'spork', '~> 1.0rc'
end

这是完整的错误:

app3 git:(write-tests) ? guard
    /Users/Nick/.rvm/gems/ruby-1.9.3-p448/gems/guard-1.4.0/lib/guard.rb:47:in `setup': uninitialized constant Listen::Turnstile (NameError)
        from /Users/Nick/.rvm/gems/ruby-1.9.3-p448/gems/guard-1.4.0/lib/guard.rb:155:in `start'
        from /Users/Nick/.rvm/gems/ruby-1.9.3-p448/gems/guard-1.4.0/lib/guard/cli.rb:104:in `start'
        from /Users/Nick/.rvm/gems/ruby-1.9.3-p448/gems/thor-0.18.1/lib/thor/command.rb:27:in `run'
        from /Users/Nick/.rvm/gems/ruby-1.9.3-p448/gems/thor-0.18.1/lib/thor/invocation.rb:120:in `invoke_command'
        from /Users/Nick/.rvm/gems/ruby-1.9.3-p448/gems/thor-0.18.1/lib/thor.rb:363:in `dispatch'
        from /Users/Nick/.rvm/gems/ruby-1.9.3-p448/gems/thor-0.18.1/lib/thor/base.rb:439:in `start'
        from /Users/Nick/.rvm/gems/ruby-1.9.3-p448/gems/guard-1.4.0/bin/guard:6:in `<top (required)>'
        from /Users/Nick/.rvm/gems/ruby-1.9.3-p448/bin/guard:23:in `load'
        from /Users/Nick/.rvm/gems/ruby-1.9.3-p448/bin/guard:23:in `<main>'
        from /Users/Nick/.rvm/gems/ruby-1.9.3-p448/bin/ruby_noexec_wrapper:14:in `eval'
        from /Users/Nick/.rvm/gems/ruby-1.9.3-p448/bin/ruby_noexec_wrapper:14:in `<main>'

Answer 1

您gem "guard"的宝石文件中没有.

我得到了同样的错误.

我所包含的插件之一,guard-bundler,将防护版本锁定在1.4.0,而最新版本的防护版本为2.0.5.删除该插件修复了错误.不要忘记从保护文件中删除guard-bundler代码.

我猜你的卫士宝石是作为系统宝石安装的.把它放在你的gem文件中并运行它bundle exec.

coderay上的guard和better_errors之间也存在依赖冲突.我把它固定在1.0.5,以便安装它们.我没有测试任何与coderay相关的功能,以查看该版本是否会导致better_errors出现问题.

gem 'coderay', '~> 1.0.5'

Answer 2

我的rails 3.2.13应用程序遇到了类似的问题.

令人困惑的部分是我没有gem 'guard'在我的Gemfile中,但宝石显然是以下的依赖:

gem 'guard-rspec'
gem 'guard-livereload'
gem 'guard-cucumber'

一切都工作,直到最近bundle update,它带来了一个更新版本的listen,一个guard依赖,而guard自己被阻止(不知道为什么).所以你看到的错误就是guard试图调用一个不再存在的类listen.

通过显式添加当前版本guard来解决问题Gemfile:

gem 'guard', '>=2.1.0'

当然还有重新捆绑.