[英]How do I specify a version of Ruby for Rails without using RVM?
How do I specify a version of Ruby for Rails without using RVM ? 如何在不使用RVM的情况下指定Ruby for Rails的版本?
I am using Xubuntu 11.10, which comes with Ruby 1.8. 我正在使用Ruby 1.8随附的Xubuntu 11.10。 I have installed Ruby 1.9 package, and updated the alternatives so
ruby -version
returns ruby 1.9.2p290 (2011-07-09 revision 32553) [x86_64-linux]
. 我已经安装了Ruby 1.9软件包,并更新了替代版本,因此
ruby -version
返回ruby 1.9.2p290 (2011-07-09 revision 32553) [x86_64-linux]
。 Rails still seems to be using 1.8 however, so how can I tell it to use Ruby 1.9 instead? 但是,Rails似乎仍在使用1.8,因此如何告诉它使用Ruby 1.9? I don't want to uninstall Ruby 1.8 since that will remove a bunch of other stuff as well.
我不想卸载Ruby 1.8,因为那样也会删除很多其他东西。
I know similar SO questions have been answered with "use RVM". 我知道类似的问题已经用“使用RVM”回答了。 I can't do this - it has a dependency on
libreadline-gplv2-dev
package, which conflicts with libreadline-dev
which r-base-dev
depends on. 我无法执行此操作-它依赖
libreadline-gplv2-dev
软件包,该软件包与r-base-dev
依赖的libreadline-dev
冲突。
It seems I need to update the gem command to use the 1.9 version as well as ruby, then I can install rails through that. 看来我需要更新gem命令以使用1.9版本以及ruby,然后才能通过它安装rails。 But to install rails, I need the dev headers for ruby.
但是要安装rails,我需要ruby的dev标头。 The following commands should work for others:
以下命令应适用于其他命令:
sudo apt-get install ruby1.9.1 ruby1.9.1-dev
sudo update-alternatives --config ruby
sudo update-alternatives --config gem
sudo gem install rails
It seems your rubygems environment is using ruby 1.8 whereas you want your rails app to run in 1.9. 看来您的rubygems环境使用的是ruby 1.8,而您希望Rails应用程序在1.9中运行。 You can find out by doing this:
您可以这样做:
$ ruby -version
ruby 1.9.2p290 (2011-07-09 revision 32553) [x86_64-linux]
$ gem env | grep 'RUBY VERSION'
- RUBY VERSION: 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux]
Make sure your rubygems environment under which rails runs is running the version you want. 确保运行Rails的rubygems环境正在运行所需的版本。
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