Rails 4.0 安装错误

本文介绍了Rails 4.0 安装错误-要求:无法加载此类文件--active_support (LoadError)的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我安装了新的 Ruby (2.0) 和 Rails 4.0，当我执行Rails new test_app"时，我得到以下信息.有人遇到过这种情况吗?

I installed the new Ruby (2.0) and Rails 4.0 and when i do "Rails new test_app" i get the following. Anybody run into this?

[devuser@devbox ~]$ rails new test_app

[devuser@devbox ~]$ rails new test_app

/usr/local/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in require': cannot load such >file -- active_support (LoadError)来自/usr/local/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:inrequire'来自/usr/local/lib/ruby/gems/2.0.0/gems/railties-4.0.0.beta1/lib/rails/generators.rb:4:in >'来自/usr/local/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:inrequire'来自/usr/local/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in require'来自/usr/local/lib/ruby/gems/2.0.0/gems/railties->4.0.0.beta1/lib/rails/commands/application.rb:28:in'来自/usr/local/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in require'来自/usr/local/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:inrequire'来自/usr/local/lib/ruby/gems/2.0.0/gems/railties-4.0.0.beta1/lib/rails/cli.rb:15:in <top >(required)>'来自/usr/local/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:inrequire'来自/usr/local/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in require'来自/usr/local/lib/ruby/gems/2.0.0/gems/railties-4.0.0.beta1/bin/rails:7:in'从/usr/local/bin/rails:23:in load'来自/usr/local/bin/rails:23:in'

/usr/local/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in require': cannot load such >file -- active_support (LoadError) from /usr/local/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:inrequire' from /usr/local/lib/ruby/gems/2.0.0/gems/railties-4.0.0.beta1/lib/rails/generators.rb:4:in ><top (required)>' from /usr/local/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:inrequire' from /usr/local/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in require' from /usr/local/lib/ruby/gems/2.0.0/gems/railties->4.0.0.beta1/lib/rails/commands/application.rb:28:in' from /usr/local/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in require' from /usr/local/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:inrequire' from /usr/local/lib/ruby/gems/2.0.0/gems/railties-4.0.0.beta1/lib/rails/cli.rb:15:in <top >(required)>' from /usr/local/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:inrequire' from /usr/local/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in require' from /usr/local/lib/ruby/gems/2.0.0/gems/railties-4.0.0.beta1/bin/rails:7:in' from /usr/local/bin/rails:23:in load' from /usr/local/bin/rails:23:in'

推荐答案

我的问题与权限有关.不知何故，其他"用户需要 rx 权限.我执行了以下操作，现在可以使用了:

My problem was permission related. Somehow, the "other" user needs rx permissions. I did the following and it works now:

sudo chmod -R o+rx/usr/local/lib/ruby/gems/2.0.0/gems/

sudo chmod -R o+rx /usr/local/lib/ruby/gems/2.0.0/gems/

如果您无法加载此类文件及其指向 require 语句，请检查您对/gems 文件夹和 underneat 文件夹的权限.

If you getting cannot load such file and its pointing to require statement, check your permissions for /gems folder and folders underneat.