Question

我一直在尝试升级我的MacBook上的rails环境而且我搞砸了什么，但我不确定是什么。是否可以完全删除RVM，Ruby和Rails并从头开始？我对这一切都应该如何工作感到很困惑。

我目前通过RVM安装了Ruby 1.8.7和1.9.2。我把rails升级到了3.0.9，但它现在拒绝工作，引用rake的一些错误。

/Users/Moshe/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/dependency.rb:247:in to_specs': Could not find rails (>= 0) amongst [rake-0.8.7, rake-0.8.7, rubygems-update-1.8.5] (Gem::LoadError) from /Users/Moshe/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/dependency.rb:256:in to_spec' 来自/Users/Moshe/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems.rb:1182:in gem' from /Users/Moshe/.rvm/rubies/ruby-1.9.2-p180/bin/rails:18:in'

我可以做些什么来解决这个问题？我想恢复我的Mac附带的ruby版本。

（编辑：我在Snow Leopard 10.6.8上）

EDIT2：

我现在已经获得了运行ruby 1.9.2和rails 3.0.9的rvm但是，尝试使用rails server启动服务器会返回以下内容：

AppMachineMobile：你好Moshe $ rails服务器

=＆GT;启动WEBrick

=＆GT; Rails 3.0.9应用程序从http://0.0.0.0:3000
开始开发
=＆GT;使用-d调用分离

=＆GT; Ctrl-C关闭服务器

退出

/Users/Moshe/Development/Ruby/hello/config/initializers/new_rails_defaults.rb:14：未定义的方法`generate_best_match ='for ActionDispatch :: Routing：Module（NoMethodError）

来自/Library/Ruby/Gems/1.8/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:235:in"load'

来自/Library/Ruby/Gems/1.8/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:235:in"load'

来自/Library/Ruby/Gems/1.8/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:225:in,load_dependency'

来自/Library/Ruby/Gems/1.8/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:596:in"new_constants_in'

来自/Library/Ruby/Gems/1.8/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:225:in,load_dependency'

来自/Library/Ruby/Gems/1.8/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:235:in"load'

来自/Library/Ruby/Gems/1.8/gems/railties-3.0.9/lib/rails/engine.rb:201

来自/Library/Ruby/Gems/1.8/gems/railties-3.0.9/lib/rails/engine.rb:200:in` each'

来自/Library/Ruby/Gems/1.8/gems/railties-3.0.9/lib/rails/engine.rb:200

来自/Library/Ruby/Gems/1.8/gems/railties-3.0.9/lib/rails/initializable.rb:25:in`instance_exec'

来自/Library/Ruby/Gems/1.8/gems/railties-3.0.9/lib/rails/initializable.rb:25:in'run'

来自/Library/Ruby/Gems/1.8/gems/railties-3.0.9/lib/rails/initializable.rb:50:in,run_initializers'

来自/Library/Ruby/Gems/1.8/gems/railties-3.0.9/lib/rails/initializable.rb:49:in` each'

来自/Library/Ruby/Gems/1.8/gems/railties-3.0.9/lib/rails/initializable.rb:49:in,run_initializers'

来自/Library/Ruby/Gems/1.8/gems/railties-3.0.9/lib/rails/application.rb:134:in`initialize！'

来自/Library/Ruby/Gems/1.8/gems/railties-3.0.9/lib/rails/application.rb:77:in`send'

来自/Library/Ruby/Gems/1.8/gems/railties-3.0.9/lib/rails/application.rb:77:in`method_missing'

来自/Users/Moshe/Development/Ruby/hello/config/environment.rb:5

来自/Users/Moshe/Development/Ruby/hello/config.ru:3:in`requiret'

来自/Users/Moshe/Development/Ruby/hello/config.ru:3

来自/Library/Ruby/Gems/1.8/gems/rack-1.2.3/lib/rack/builder.rb:46:in`instance_eval'

来自/Library/Ruby/Gems/1.8/gems/rack-1.2.3/lib/rack/builder.rb:46:in`initialize'

来自/Users/Moshe/Development/Ruby/hello/config.ru:1:in`new'

来自/Users/Moshe/Development/Ruby/hello/config.ru:1

Answer 1

我会尝试从头开始。检查您安装的rvms：

$rvm list

你应该得到这样的东西：

rvm rubies

   jruby-1.5.5 [ x86_64-java ]
   ree-1.8.7-2010.02 [ x86_64 ]
   ruby-1.8.6-p399 [ x86_64 ]
   ruby-1.8.7-p299 [ x86_64 ]
=> ruby-1.8.7-p302 [ x86_64 ]
   ruby-1.9.2-p0 [ x86_64 ]

对每件作品进行rvm卸载：

$rvm uninstall 1.8.7
$rvm uninstall 1.9.2

安装Ruby 1.8.7：

$ rvm install 1.8.7

安装最新的Ruby 1.9.2：

$ rvm install 1.9.2

设置默认值（如果需要，则设置为1.8.7）：

$ rvm use 1.9.2 --default

安装PostgreSQL和SQLite宝石（假设雪豹）：

$ env ARCHFLAGS="-arch x86_64" gem install pg sqlite3-ruby

安装Rails 3（包括Bundler）：

$ gem install rails

如果你在rails 2x项目中：

$rvm use 1.8.7

如果您参与rails 3项目：

$rvm use 1.9.2

当你在每个rvm中时，如果你正在使用bundler，则通过'bundle install'加载与项目关联的gem;如果你把所有东西都转移到你的环境中，则加载'rake gems：install'.rb

Answer 2

rm -rf .rvm .rvmrc

然后删除项目目录中的.rvmrc文件，如果你想确保从头开始。

除非你安装了一个系统范围的ruby，除了通过rvm安装一个，你再也没有“ruby”命令，直到你再次重新安装rvm。

所以：

bash < <(curl -s https://rvm.beginrescueend.com/install/rvm)

重新安装rvm。现在一切都应该回到默认安装。

Answer 3

我没有删除任何.rvm和.rvmrc文件。但我的问题已经解决了。我不知道它是如何解决的。但是我告诉你的是我做了什么。首先我在我的Gemfile中使用了不稳定版本的rails gem。这就是问题发生的原因。

gem 'rails', :path => '/home/user/life/rails'  #this is an unstable rails 4.0.0 beta

 #gem 'rails', '3.2.8' 

user@sandip:~/life/samplelogin$ rails c
/home/user/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/site_ruby/1.9.1/rubygems/dependency.rb:247:in `to_specs': Could not find railties (>= 0) amongst [activerecord-deprecated_finders-0.0.1, arel-3.0.2, atomic-1.0.1, builder-3.1.4, bundler-1.2.3, bundler-1.2.3, erubis-2.7.0, hike-1.2.1, i18n-0.6.1, json-1.7.5, mail-2.5.3, mime-types-1.19, minitest-4.3.3, multi_json-1.5.0, mysql2-0.3.11, polyglot-0.3.3, rack-1.4.1, rack-test-0.6.2, rake-10.0.3, rake-0.9.2, rdoc-3.12, sprockets-2.8.2, sprockets-rails-2.0.0.rc1, thor-0.16.0, thread_safe-0.1.0, tilt-1.3.3, treetop-1.4.12, tzinfo-0.3.35] (Gem::LoadError)
    from /home/user/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/site_ruby/1.9.1/rubygems/dependency.rb:256:in `to_spec'
    from /home/user/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/site_ruby/1.9.1/rubygems.rb:1210:in `gem'
    from /home/user/.rvm/gems/ruby-1.9.3-p362/bin/rails:18:in `<main>'

接下来我做了什么，我只是从本地文件夹中评论gem。

 #gem 'rails', :path => '/home/user/life/rails'  #this is an unstable rails 4.0.0 beta'

gem 'rails', '3.2.8'

然后运行bundle install

然后做

user@sandip:~/life/samplelogin$ rails c
Loading development environment (Rails 3.2.8)
1.9.3p362 :001 >

Answer 4

这可能会有所帮助：

http://blog.parsalabs.com/blog/2013/08/27/setting-up-a-ruby-on-rails-4-development-environment-on-a-clean-mac-os-x-installation/

rbenv是一款管理红宝石的绝佳工具。

Answer 5

在重新开始之前，请先看看RBENV作为RVM的替代方案。它更清洁，更容易使用。

如何从头开始创建Ruby环境？

5 个答案: