Rails3
db $ APP/rake db:drop:allsonota$ APP/rails destroy controller hoge
$ APP/rails generate scaffold hoge name:stringError /usr/lib/ruby/gems/1.8/gems/execjs-1.3.0/lib/execjs/runtimes.rb:50:in `autodetect': Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available …