Rails 一直告诉我它当前没有安装 [英] Rails keeps telling me that it's not currently installed
问题描述
我使用 rvm 来管理不同的红宝石和它们的宝石.我的 shell 是 zsh，其中 oh-my-zsh 配置了基本设置.启用 oh-my-zsh 插件是 ruby、rails、osx 和 git.这是我用来安装 ruby-1.8.7 和 rails-3.0.7 的命令.
I use rvm to manage different rubies and their gemsets. My shell is zsh with oh-my-zsh configured with basic settings. Enabled oh-my-zsh plugins are ruby, rails, osx, and git. Here's the command I used to install ruby-1.8.7 and rails-3.0.7.
rvm install 1.8.7
rvm use 1.8.7
gem install rails -v=3.0.7
然后我输入 rails 并得到:
and then I typed rails and got:
Rails is not currently installed on this system. To get the latest version, simply type:
$ sudo gem install rails
You can then rerun your "rails" command.
我也尝试过更彻底的安装，比如在切换到 ruby-1.8.7 后重新安装 rubygems，或者创建一个全新的 gemset，但没有运气.
I've tried more thorough installs also, Like reinstall rubygems after switching to ruby-1.8.7, or create a completely new gemset, but with no luck.
这是 rvm 信息:
ruby-1.8.7-p352@rails:
system:
uname: "Darwin yicai.local 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun 7 16:32:41 PDT 2011; root:xnu-1504.15.3~1/RELEASE_X86_64 x86_64"
bash: "/bin/bash => GNU bash, version 3.2.48(1)-release (x86_64-apple-darwin10.0)"
zsh: "/bin/zsh => zsh 4.3.9 (i386-apple-darwin10.0)"
rvm:
version: "rvm 1.8.6 by Wayne E. Seguin (wayneeseguin@gmail.com) [https://rvm.beginrescueend.com/]"
ruby:
interpreter: "ruby"
version: "1.8.7"
date: "2011-06-30"
platform: "i686-darwin10.8.0"
patchlevel: "2011-06-30 patchlevel 352"
full_version: "ruby 1.8.7 (2011-06-30 patchlevel 352) [i686-darwin10.8.0]"
homes:
gem: "/Users/nil/.rvm/gems/ruby-1.8.7-p352@rails"
ruby: "/Users/nil/.rvm/rubies/ruby-1.8.7-p352"
binaries:
ruby: "/Users/nil/.rvm/rubies/ruby-1.8.7-p352/bin/ruby"
irb: "/Users/nil/.rvm/rubies/ruby-1.8.7-p352/bin/irb"
gem: "/Users/nil/.rvm/rubies/ruby-1.8.7-p352/bin/gem"
rake: "/Users/nil/.rvm/bin/rake"
environment:
PATH: "/Users/nil/.rvm/gems/ruby-1.8.7-p352@rails/bin:/Users/nil/.rvm/gems/ruby-1.8.7-p352@global/bin:/Users/nil/.rvm/rubies/ruby-1.8.7-p352/bin:/Users/nil/.rvm/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin:/usr/local/sbin"
GEM_HOME: "/Users/nil/.rvm/gems/ruby-1.8.7-p352@rails"
GEM_PATH: "/Users/nil/.rvm/gems/ruby-1.8.7-p352@rails:/Users/nil/.rvm/gems/ruby-1.8.7-p352@global"
MY_RUBY_HOME: "/Users/nil/.rvm/rubies/ruby-1.8.7-p352"
IRBRC: "/Users/nil/.rvm/rubies/ruby-1.8.7-p352/.irbrc"
RUBYOPT: ""
gemset: "rails"
gem 版本是最新的 1.8.10.
and the gem version is 1.8.10, the latest.
推荐答案
我今天遇到了这个问题.与您的问题不完全相关，但由于此页面是我搜索 Rails 当前未安装在此系统上" 时出现在 Google 中的页面，我想我会添加我的答案:
I had this problem today. Not completely related to your question, but since this page is what comes up in Google when I search for "Rails is not currently installed on this system", I thought I would add my answer:
发生的事情是我使用 ruby 1.9.2 和 rails 有一段时间，但后来我需要使用 ruby 1.8.7 来运行我发现的其他一些脚本.
What happened is that I was using ruby 1.9.2 with rails for a while, but then I needed to use ruby 1.8.7 to run some other script that I found.
后来我想通过系统改回使用1.9.2，这就是问题开始的地方:
Afterwards, I wanted to change by system back to using 1.9.2, and that's where the problem started:
$ rvm list
=> ruby-1.8.7-p352 [ x86_64 ]
ruby-1.9.2-p290 [ x86_64 ]
$ rvm use 1.9.2
我认为这可以解决问题.但是不，这给了我Rails 当前未安装在此系统上" 消息.
I thought that would do the trick. But no, that gives me the "Rails is not currently installed on this system" message.
我忘记了我使用 rvm gemset 配置了 rails.因此，当我选择要激活的 ruby 版本时，我需要指定正确的 gemset.
What I had forgotten is that I had configured rails using an rvm gemset. So I needed to specify the correct gemset when I was selecting which ruby version to make active.
$ rvm gemset list_all
gemsets for ruby-1.8.7-p352 (found in /Users/asgeo1/.rvm/gems/ruby-1.8.7-p352)
global
gemsets for ruby-1.9.2-p290 (found in /Users/asgeo1/.rvm/gems/ruby-1.9.2-p290)
global
rails31
$ rvm use ruby-1.9.2-p290@rails31
成功了.
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