rbenv: rails:安装rails 5.2.1后没有立即找到命令

Question

我一整天都在尝试从Rails 4x升级到5.2.1。我遵循了这的升级指南，但未能成功升级。

问题:在“成功”安装Rails 5之后的使用：ruby 2.5.3p105 (2018-10-18 revision 65156) [x86_64-darwin17]和rails -v获得：

rbenv: rails: command not found

The `rails' command exists in these Ruby versions:
  2.2.0

我尝试过的：，gem pristine different gems，gem pristine --all，这，玩过路径，但到目前为止没有运气。

任何帮助都将不胜感激。

此外，这里是我的gem环境：

RubyGems Environment:
  - RUBYGEMS VERSION: 2.7.6
  - RUBY VERSION: 2.5.3 (2018-10-18 patchlevel 105) [x86_64-darwin17]
  - INSTALLATION DIRECTORY: /Users/Matt/.rvm/gems/ruby-2.2.0
  - USER INSTALLATION DIRECTORY: /Users/Matt/.gem/ruby/2.5.0
  - RUBY EXECUTABLE: /Users/Matt/.rbenv/versions/2.5.3/bin/ruby
  - EXECUTABLE DIRECTORY: /Users/Matt/.rvm/gems/ruby-2.2.0/bin
  - SPEC CACHE DIRECTORY: /Users/Matt/Tools/.rbenv/versions/2.2.0/lib/ruby/gems/specs
  - SYSTEM CONFIGURATION DIRECTORY: /Users/Matt/.rbenv/versions/2.5.3/etc
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86_64-darwin-17
  - GEM PATHS:
     - /Users/Matt/.rvm/gems/ruby-2.2.0
     - /Users/Matt/Tools/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :backtrace => false
     - :bulk_threshold => 1000
     - "gem" => "--no-document"
  - REMOTE SOURCES:
     - https://rubygems.org/
  - SHELL PATH:
     - /Users/Matt/.rbenv/versions/2.5.3/bin
     - /usr/local/Cellar/rbenv/1.1.1/libexec
     - /Users/Matt/.rbenv/plugins/ruby-build/bin
     - /Users/Matt/.rbenv/shims
     - /Users/Matt/.rbenv/bin
     - /Users/Matt/anaconda/bin
     - /Library/Frameworks/Python.framework/Versions/3.5/bin
     - /Users/Matt/.rbenv/shims
     - /Users/Matt/.rbenv/shims
     - /usr/local/bin
     - /usr/bin
     - /bin
     - /usr/sbin
     - /sbin
     - /opt/X11/bin

Answer 1

您使用ruby安装了rbenv，现在可以安装gems。rails是ruby的瑰宝。因此，首先，要设置Ruby的全局版本，您应该在主目录中创建.ruby-version文件，并在其上编写已安装的红宝石版本(2.5.3)。

然后您应该运行gem install rails命令来安装rails。