RVM Ruby on Snow Leopard

Question

我安装了RVM，然后安装了最新版本的Ruby。现在，当我尝试生成一个新的rails应用程序时，我得到了以下错误消息。

    NOTE: Gem::Specification#default_executable= is deprecated with no replacement. It will be removed on or after 2011-10-01.
    Gem::Specification#default_executable= called from /Users/local/.rvm/gems/ruby-1.9.2-p180@global/specifications/rake-0.8.7.gemspec:10.
    NOTE: Gem::Specification#default_executable= is deprecated with no replacement. It will be removed on or after 2011-10-01.
    Gem::Specification#default_executable= called from /Users/local/.rvm/gems/ruby-1.9.2-p180/specifications/rake-0.8.7.gemspec:10.
    NOTE: Gem::Specification#default_executable= is deprecated with no replacement. It will be removed on or after 2011-10-01.
    Gem::Specification#default_executable= called from /Users/local/.rvm/gems/ruby-1.9.2-p180/specifications/rubygems-update-1.8.1.gemspec:11.
    /Library/Ruby/Site/1.8/rubygems/dependency.rb:247:in `to_specs': Could not find rails (>= 0) amongst [rake-0.8.7, rake-0.8.7, rubygems-update-1.8.1] (Gem::LoadError)
        from /Library/Ruby/Site/1.8/rubygems/dependency.rb:256:in `to_spec'
        from /Library/Ruby/Site

/1.8/rubygems.rb:1182:in `gem'
    from /usr/bin/rails:18

你知道为什么会发生这种事吗？

Answer 1

确保已经为RVM安装实际安装了rails gem：

gem install rails

否则，它将默认运行Snow Leopard上预先安装的Rails版本( /usr/bin/rails文件)

您看到的所有弃用消息都只是警告；最新版本的RubyGems弃用了一大堆lot。

Answer 2

我只是想补充一下...

我也有同样的问题。我尝试了几次安装rails。如果其他人遇到了这个问题，并且上面的方法不起作用，那么问题是要给目录适当的权限。详细信息：

我在MacOS10.6.8上运行Rails。在我的用户目录中，我喜欢为我的开发工作设置一个项目目录。在将项目目录修改为777后，我可以很好地运行rails。

我希望这能帮到你。