问题描述
我使用Migration Assistant迁移了MacBook.我在以前的笔记本电脑上使用过两个Rails应用程序，现在当我尝试在新笔记本电脑上使用这些应用程序时，其中一个可以正常使用(Restaurant App)，而另一个(Quiz App)则可以打开服务器.得到这个
I migrated my MacBook using Migration Assistant. I have two rails apps I was working on my previous laptop and now when I try working on those apps on my new laptop one them works properly(Restaurant App) and in the other(Quiz App) when I try to turn on the server I get this
Your Ruby version is 2.2.3, but your Gemfile specified 2.5.1
这两个应用程序都具有ruby版本2.5.1.我可以在一个应用程序(餐厅应用程序)上运行服务器，而不能在另一个应用程序(测验应用程序)上运行服务器的可能原因.
Both the apps have ruby version 2.5.1. What could be the possible reason the I am able to run the server on one app(Restaurant App) and not the other(Quiz App).
我尝试运行下面的命令将ruby版本切换到2.5.1
I tried running the command below to switch the ruby version to 2.5.1
brew unlink [email protected] && brew link --force --overwrite [email protected]
但是我得到一个错误
No such keg: /usr/local/Cellar/[email protected]
请帮助我解决这个问题.
Please help me figure out this problem.
推荐答案
通常，最好使用ruby版本管理器.两个主要的是RVM( https://rvm.io/)和rbenv
Generally you're better off using a ruby version manager. The two major ones being RVM (https://rvm.io/) and rbenv
我个人是rbenv及其对垫片的使用的忠实拥护者(使用捆绑程序并通过xcversion亲自切换xcode版本时，我的麻烦较少) https://github.com/rbenv/rbenv
I'm personally a big fan of rbenv and its use of shims (I have less trouble when using bundler and switching xcode versions via xcversion personally) https://github.com/rbenv/rbenv
brew install rbenv
rbenv install 2.5.1
rbenv use 2.5.1
(可选)您可以在项目根目录中使用.ruby-version文件，以确保再次没有问题. https://github.com/rbenv/rbenv#choosing-the-ruby-版本
optionally you can use a .ruby-version file in your project root to ensure you don't have an issue again. https://github.com/rbenv/rbenv#choosing-the-ruby-version
# in your project root
echo '2.5.1' > .ruby-version
通过这种方式，只需在项目根目录中启动它，就可以轻松选择要用于应用程序的版本.
In this way you can easily select whichever version you'd like to use for your application, just by starting it in the project root.
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