rails generate controllerできない

rails generate controllerしようとしたら、何故かできなかった

ひとまず、コンソールエラー

rails generate controller hoges
/Users/hogehoge/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/thread_safe-0.3.5/lib/thread_safe/cache.rb:155: warning: constant ::Fixnum is deprecated
/Users/hogehoge/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/thread_safe-0.3.5/lib/thread_safe/cache.rb:155: warning: constant ::Fixnum is deprecated
/Users/hogehoge/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-4.2.5/lib/active_support/core_ext/numeric/conversions.rb:121: warning: constant ::Fixnum is deprecated

/Users/hogehoge/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-4.2.5/lib/active_support/core_ext/numeric/conversions.rb:121: warning: constant ::Bignum is deprecated

結論

railsとrubyのバージョンが不一致？？

以下、やったこと

そもそもログにもWarningしか出てないじゃん...

こまった...
ちな、このwarningは
サンプルコードでわかる！Ruby 2.4の新機能と変更点で詳細？を確認しました。

そこで、conrollerができなくなるまでにやったことを振り返る

• Gemfileの更新 →よく使ってきたgemを追加しただけなので多分違う
• Editorの設定の変更 → 論外
• rubyのバージョンアップ →　これかな？？

railsのバージョンを上げてみる

Rails 4.2　→　Rails 5.0.0.1に上げてみた

gem install rails -v '5.0.0.1' --no-rdoc --no-ri
Successfully installed rails-5.0.0.1
1 gem installed
KTakataMacBookAir:workspace project$ rails -v
Rails 5.0.0.1

Gemfileの更新

Gemfile

gem 'rails', '5.0.0.1' # 元は4.2.5
```

`bundle update`する

#### 再度、rails g contorllerの実行

```
KTakataMacBookAir:workspace project$ rails generate controller hoges
/Users/hogehoge/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-5.0.0.1/lib/active_support/xml_mini.rb:51: warning: constant ::Fixnum is deprecated
/Users/hogehoge/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-5.0.0.1/lib/active_support/xml_mini.rb:52: warning: constant ::Bignum is deprecated
/Users/hogehoge/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-5.0.0.1/lib/active_support/core_ext/numeric/conversions.rb:138: warning: constant ::Fixnum is deprecated
Expected string default value for '--jbuilder'; got true (boolean)
Expected string default value for '--helper'; got true (boolean)
Expected string default value for '--assets'; got true (boolean)
      create  app/controllers/skills_controller.rb
      invoke  erb
      create    app/views/skills
      invoke  rspec
      create    spec/controllers/skills_controller_spec.rb
      invoke  helper
      create    app/helpers/skills_helper.rb
      invoke    rspec
      create      spec/helpers/skills_helper_spec.rb
      invoke  assets
      invoke    coffee
      create      app/assets/javascripts/skills.coffee
      invoke    scss
      create      app/assets/stylesheets/skills.scss
```

おお、出来た