修復Rails和服務器以及Nitrous.io

Question

我在Nitrous.io上做了一個月的Rails教程。 有一次，我的樹上出現了一些奇怪的文件，我刪除了它們。 一切都停止了。

我跑了：

$ git add .
$ git checkout -f

並恢復了樹。

但是，當我跑：

$ rails server

我明白了：

action@first-project-48185:~/pinteresting$ rails server                                                                                                        
-bash: rails: command not found

我也嘗試過：

$ ruby -v #and got an older version, so I reinstalled it
$ rails -v

action@first-project-48185:~/pinteresting$ rails -v                                                                                                            
-bash: rails: command not found

當我跑：

$ ruby -v #on MAC terminal, I get the correct version
$ rails -v #on MAC terminal, I get the correct version

有趣的是，當我跑：

$ rails server or $ rails server -p 4000

我明白了：

Franciscos-MacBook-Pro:pinteresting franciscomello$ rails server
/Library/Ruby/Gems/2.0.0/gems/sqlite3-1.3.8/lib/sqlite3.rb:6:in `require': cannot load such file -- sqlite3/sqlite3_native (LoadError)

還有一堆其他文字如下：

from /Library/Ruby/Gems/2.0.0/gems/sqlite3-1.3.8/lib/sqlite3.rb:6:in `rescue in <top (required)>'
    from /Library/Ruby/Gems/2.0.0/gems/sqlite3-1.3.8/lib/sqlite3.rb:2:in `<top (required)>'
    from /Library/Ruby/Gems/2.0.0/gems/bundler-1.3.5/lib/bundler/runtime.rb:72:in `require'
    from /Library/Ruby/Gems/2.0.0/gems/bundler-1.3.5/lib/bundler/runtime.rb:72:in `block (2 levels) in require'
    from /Library/Ruby/Gems/2.0.0/gems/bundler-1.3.5/lib/bundler/runtime.rb:70:in `each'
    from /Library/Ruby/Gems/2.0.0/gems/bundler-1.3.5/lib/bundler/runtime.rb:70:in `block in require'
    from /Library/Ruby/Gems/2.0.0/gems/bundler-1.3.5/lib/bundler/runtime.rb:59:in `each'
    from /Library/Ruby/Gems/2.0.0/gems/bundler-1.3.5/lib/bundler/runtime.rb:59:in `require'
    from /Library/Ruby/Gems/2.0.0/gems/bundler-1.3.5/lib/bundler.rb:132:in `require'
    from /Users/franciscomello/Desktop/pinteresting/config/application.rb:7:in `<top (required)>'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.0.0/lib/rails/commands.rb:76:in `require'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.0.0/lib/rails/commands.rb:76:in `block in <top (required)>'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.0.0/lib/rails/commands.rb:73:in `tap'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.0.0/lib/rails/commands.rb:73:in `<top (required)>'
    from bin/rails:4:in `require'
    from bin/rails:4:in `<main>'
Franciscos-MacBook-Pro:pinteresting franciscomello$ rails server -p 4000
/Library/Ruby/Gems/2.0.0/gems/sqlite3-1.3.8/lib/sqlite3.rb:6:in `require': cannot load such file -- sqlite3/sqlite3_native (LoadError)
    from /Library/Ruby/Gems/2.0.0/gems/sqlite3-1.3.8/lib/sqlite3.rb:6:in `rescue in <top (required)>'
    from /Library/Ruby/Gems/2.0.0/gems/sqlite3-1.3.8/lib/sqlite3.rb:2:in `<top (required)>'
    from /Library/Ruby/Gems/2.0.0/gems/bundler-1.3.5/lib/bundler/runtime.rb:72:in `require'
    from /Library/Ruby/Gems/2.0.0/gems/bundler-1.3.5/lib/bundler/runtime.rb:72:in `block (2 levels) in require'
    from /Library/Ruby/Gems/2.0.0/gems/bundler-1.3.5/lib/bundler/runtime.rb:70:in `each'
    from /Library/Ruby/Gems/2.0.0/gems/bundler-1.3.5/lib/bundler/runtime.rb:70:in `block in require'
    from /Library/Ruby/Gems/2.0.0/gems/bundler-1.3.5/lib/bundler/runtime.rb:59:in `each'
    from /Library/Ruby/Gems/2.0.0/gems/bundler-1.3.5/lib/bundler/runtime.rb:59:in `require'
    from /Library/Ruby/Gems/2.0.0/gems/bundler-1.3.5/lib/bundler.rb:132:in `require'
    from /Users/franciscomello/Desktop/pinteresting/config/application.rb:7:in `<top (required)>'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.0.0/lib/rails/commands.rb:76:in `require'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.0.0/lib/rails/commands.rb:76:in `block in <top (required)>'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.0.0/lib/rails/commands.rb:73:in `tap'
    from /Library/Ruby/Gems/2.0.0/gems/railties-4.0.0/lib/rails/commands.rb:73:in `<top (required)>'
    from bin/rails:4:in `require'
    from bin/rails:4:in `<main>'

令人沮喪的是我在最大的連勝上沒有任何錯誤或錯誤:(

有任何想法嗎？

Answer 1

我不知道為什么Rails不再處理這些錯誤，但我建議重新安裝rails。 運行以下命令以重新安裝Rails：

gem install rails

從這里你應該能夠運行rails server 。

如果您的Gemfile包含其他需要安裝的gem，您也可以在項目目錄中運行bundle install 。