Railsチュートリアル２章 rails generate scaffold

Question

Railsチュートリアルをlocal環境でやっています．

Railsチュートリアルの２章で
$>rails generate scaffold User name:string email:string をしましたが，
下記のエラーが出てしまいました．
Rubygemsをアップデートしてみましたが，下記のWarningとエラーが取り除くことができません．
どのように対処すればよいのでしょうか？よろしくお願いします．

Warning: You're using Rubygems 2.0.14.1 with Spring. Upgrade to at least Rubygems 2.1.0 and run gem pristine --all for better startup performance.
/usr/local/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in require': cannot load such file -- bundler/setup (LoadError) from /usr/local/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in require'
from /Library/Ruby/Gems/2.0.0/gems/spring-1.1.3/lib/spring/commands.rb:33:in <module:Spring>' from /Library/Ruby/Gems/2.0.0/gems/spring-1.1.3/lib/spring/commands.rb:4:in <top (required)>'
from /usr/local/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in require' from /usr/local/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in require'
from /Library/Ruby/Gems/2.0.0/gems/spring-1.1.3/lib/spring/application.rb:77:in preload' from /Library/Ruby/Gems/2.0.0/gems/spring-1.1.3/lib/spring/application.rb:140:in serve'
from /Library/Ruby/Gems/2.0.0/gems/spring-1.1.3/lib/spring/application.rb:128:in block in run' from /Library/Ruby/Gems/2.0.0/gems/spring-1.1.3/lib/spring/application.rb:122:in loop'
from /Library/Ruby/Gems/2.0.0/gems/spring-1.1.3/lib/spring/application.rb:122:in run' from /Library/Ruby/Gems/2.0.0/gems/spring-1.1.3/lib/spring/application/boot.rb:18:in <top (required)>'
from /usr/local/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in require' from /usr/local/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in require'
from -e:1:in `<main>'

Answer 1

bundler gemを入れ忘れていませんか？

bundlerはRailsの外側で動くので、これだけは環境にgemインストールの必要があります。

Comments

[milkt]

localの環境にインストールしてませんでした．gem install bundler で解決しました．
ありがとうございます．