为什么rvm安装的Rails版本无法正常工作？

Question

仍然在我的rvm环境中挣扎着一个有害的错误：

    rails -v
/usr/local/lib/site_ruby/1.8/rubygems/dependency.rb:296:in `to_specs': Could not find 'railties' (>= 0) among 0 total gem(s) (Gem::LoadError)
    from /usr/local/lib/site_ruby/1.8/rubygems/dependency.rb:307:in `to_spec'
    from /usr/local/lib/site_ruby/1.8/rubygems/core_ext/kernel_gem.rb:47:in `gem'
    from /usr/bin/rails:22

这看起来像路径问题，因为它正在寻找Debian随附的默认Ruby。 这是我的路：

/home/caseyr/.rvm/gems/ruby-2.0.0-p0/bin:/home/caseyr/.rvm/gems/ruby-2.0.0-p0@global/bin:/home/caseyr/.rvm/红宝石/红宝石2.0.0-p0 / bin：/home/caseyr/.rvm/bin：/ home / caseyr / bin：/ usr / local / bin：/ usr / bin：/ bin：/ usr / bin / X11 ：/ usr /游戏

但是，这是默认的Ruby版本：

ruby -v
ruby 2.0.0p0 (2013-02-24 revision 39474) [i686-linux]

难道Rails拥有自己的独立路径？ 不知道，但这很有启发性：

which rails
/usr/bin/rails

似乎完全忽略了rvm，因为该路径应指向ruby 2.0.0。 怎么会这样？

gem环境似乎还可以：

    $ gem env
RubyGems Environment:
  - RUBYGEMS VERSION: 2.0.0
  - RUBY VERSION: 2.0.0 (2013-02-24 patchlevel 0) [i686-linux]
  - INSTALLATION DIRECTORY: /home/caseyr/.rvm/gems/ruby-2.0.0-p0
  - RUBY EXECUTABLE: /home/caseyr/.rvm/rubies/ruby-2.0.0-p0/bin/ruby
  - EXECUTABLE DIRECTORY: /home/caseyr/.rvm/gems/ruby-2.0.0-p0/bin
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86-linux
  - GEM PATHS:
     - /home/caseyr/.rvm/gems/ruby-2.0.0-p0
     - /home/caseyr/.rvm/gems/ruby-2.0.0-p0@global
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :backtrace => false
     - :bulk_threshold => 1000
     - "gem" => "--no-rdoc --no-ri"
  - REMOTE SOURCES:
     - http://rubygems.org/

--as well as the rvm one:
<BS>$ rvm info

ruby-2.0.0-p0:

  system:
    uname:       "Linux beta 2.6.32-5-686 #1 SMP Sun Sep 23 09:49:36 UTC 2012 i686 GNU/Linux"
    system:      "debian/6.0.7/i386"
    bash:        "/usr/local/bin/bash => GNU bash, version 4.1.5(1)-release (i486-pc-linux-gnu)"
    zsh:         " => not installed"

  rvm:
    version:      "rvm 1.19.6 (stable) by Wayne E. Seguin <[email protected]>, Michal Papis <[email protected]> [https://rvm.io/]"
    updated:      "8 days 17 minutes 26 seconds ago"

  ruby:
    interpreter:  "ruby"
    version:      "2.0.0p0"
    date:         "2013-02-24"
    platform:     "i686-linux"
    patchlevel:   "2013-02-24 revision 39474"
    full_version: "ruby 2.0.0p0 (2013-02-24 revision 39474) [i686-linux]"

  homes:
    gem:          "/home/caseyr/.rvm/gems/ruby-2.0.0-p0"
    ruby:         "/home/caseyr/.rvm/rubies/ruby-2.0.0-p0"

  binaries:
    ruby:         "/home/caseyr/.rvm/rubies/ruby-2.0.0-p0/bin/ruby"
    irb:          "/home/caseyr/.rvm/rubies/ruby-2.0.0-p0/bin/irb"
    gem:          "/home/caseyr/.rvm/rubies/ruby-2.0.0-p0/bin/gem"
    rake:         "/home/caseyr/.rvm/rubies/ruby-2.0.0-p0/bin/rake"

  environment:
    PATH:         "/home/caseyr/.rvm/gems/ruby-2.0.0-p0/bin:/home/caseyr/.rvm/gems/ruby-2.0.0-p0@global/bin:/home/caseyr/.rvm/rubies/ruby-2.0.0-p0/bin:/home/caseyr/.rvm/bin:/home/caseyr/bin:/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/games"
    GEM_HOME:     "/home/caseyr/.rvm/gems/ruby-2.0.0-p0"
    GEM_PATH:     "/home/caseyr/.rvm/gems/ruby-2.0.0-p0:/home/caseyr/.rvm/gems/ruby-2.0.0-p0@global"
    MY_RUBY_HOME: "/home/caseyr/.rvm/rubies/ruby-2.0.0-p0"
    IRBRC:        "/home/caseyr/.rvm/rubies/ruby-2.0.0-p0/.irbrc"
    RUBYOPT:      ""
    gemset:       ""

我知道有这样类似的问题已经回答了（比如这一个 ），但仍然没有找到一个已经让我明白了什么是真正回事（几经搬迁，重新安装，等...）

任何帮助都感激不尽; 真的很想让Rails重新工作...

-里克斯特

Answer 1

首先查看使用rvm安装了哪些红宝石

rvm list

它将显示已安装的红宝石版本。

然后使用rvm --default use ruby-2.0.0-p0

然后使用rvm gemset create gemset1

rvm use ruby-2.0.0-p0@gemset1

gem install rails -v rails_version

安装try rails -v