无法执行Rails控制台命令Ruby

Question

/Users/parkerharris/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/irb/completion.rb:10:in `require': dlopen(/Users/parkerharris/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/x86_64-darwin15/readline.bundle, 9): Library not loaded: /usr/local/opt/readline/lib/libreadline.6.dylib (LoadError)
  Referenced from: /Users/parkerharris/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/x86_64-darwin15/readline.bundle
  Reason: image not found - /Users/parkerharris/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/x86_64-darwin15/readline.bundle
    from /Users/parkerharris/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/irb/completion.rb:10:in `<top (required)>'
    from /Users/parkerharris/.rvm/gems/ruby-2.3.0/gems/railties-5.0.0.1/lib/rails/commands/console.rb:3:in `require'
    from /Users/parkerharris/.rvm/gems/ruby-2.3.0/gems/railties-5.0.0.1/lib/rails/commands/console.rb:3:in `<top (required)>'
    from /Users/parkerharris/.rvm/gems/ruby-2.3.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:138:in `require'
    from /Users/parkerharris/.rvm/gems/ruby-2.3.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:138:in `require_command!'
    from /Users/parkerharris/.rvm/gems/ruby-2.3.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:68:in `console'
    from /Users/parkerharris/.rvm/gems/ruby-2.3.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:49:in `run_command!'
    from /Users/parkerharris/.rvm/gems/ruby-2.3.0/gems/railties-5.0.0.1/lib/rails/commands.rb:18:in `<top (required)>'
    from bin/rails:4:in `require'
    from bin/rails:4:in `<main>'

尝试执行命令后,这是我的错误屏幕.我试图卸载并重新安装readline,但没有帮助.我只是在学习rails并且不会100%知道我在做什么(只是按照指南)所以这种类型的错误超出了我的理解.谢谢!

Answer 1

可能不相关,但我今天也遇到了同样的事情.

今天早上我有一个功能齐全的Ruby 2.3.1正常工作.就我而言,Ruby是由ruby-build编译和安装的,由rbenv管理.

今天我一度更新了Homebrew

brew cleanup --prune=30
brew update
brew upgrade

其中一个升级的公式是readline 7.0:

$ brew info readline
...
/usr/local/Cellar/readline/7.0 (45 files, 2M)
  Poured from bottle on 2016-10-05 at 08:09:22

不久之后我发现我对Ruby的readline支持已经彻底破解了.我看到了和你一样的错误:

/Users/mbrictson/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/pry-0.10.4/lib/pry/config/default.rb:151:in `require': dlopen(/Users/mbrictson/.rbenv/versions/2.3.1/lib/ruby/2.3.0/x86_64-darwin15/readline.bundle, 9): Library not loaded: /usr/local/opt/readline/lib/libreadline.6.dylib (LoadError)
  Referenced from: /Users/mbrictson/.rbenv/versions/2.3.1/lib/ruby/2.3.0/x86_64-darwin15/readline.bundle
  Reason: image not found - /Users/mbrictson/.rbenv/versions/2.3.1/lib/ruby/2.3.0/x86_64-darwin15/readline.bundle
  from /Users/mbrictson/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/pry-0.10.4/lib/pry/config/default.rb:151:in `lazy_readline'

解决方案是完全删除我的Ruby安装并重新编译它:

rm -rf ~/.rbenv/versions/2.3.1
rbenv install 2.3.1

我知道你使用的是rvm而不是rbenv,但也许你的情况下的解决方案类似:删除你的Ruby安装并使用rvm重新安装它.

Answer 2

一个非常快速和快速的解决方案是将rb-readline添加到您的Gemfile中.(如果其他解决方案不起作用,您希望继续,直到您有时间解决问题.我知道这不是理想的,但它是一个有效的解决方案.)

在GemFile中:

group :development do gem 'rb-readline' end

现在,只需捆绑安装.我在选项4上找到了这个解决方案(https://github.com/guard/guard/wiki/Add-Readline-support-to-Ruby-on-Mac-OS-X)我希望它有所帮助.