rails - 已安装rails但无法创建app"无法加载此类文件 - active_support"

Question

我做了sudo apt-get install rails,一切都很好.

Reading package lists... Done
Building dependency tree       
Reading state information...
...
Setting up ruby-actionmailer-2.3 (2.3.14-2) ...
Setting up ruby-activeresource-2.3 (2.3.14-1) ...
Setting up ruby-rails-2.3 (2.3.14-2) ...
Setting up rails (2.3.14.1) ...
Setting up ruby1.8-dev (1.8.7.352-2ubuntu0.1) ...

但是现在当我尝试做的时候

铁路新测试

我明白了 cannot load such file -- active_support (LoadError)

Answer 1

我不建议尝试通过aptitude加载rails,我会使用RubyGems.然后运行gem install rails,并根据需要传递特定版本.

例如,当Rails目前使用的是3.2版时,aptitude正试图为你提供Rails 2.3.您运行的命令rails new test是rails 3版本.在Rails 2中它会是script/rails ...某种东西.

具体来说,您可以尝试:

$ sudo apt-get remove rails  # remove the previous install attempt of 2.3  
$ gem install rails          # Install rails version 3+ (3.2 in this case).