Railsコードリーディング環境を整える

• rails new CodeReading
  Ruby on Railsをclone
  |+CodeReading/
  |+rails/

# Gemfile
source 'https://rubygems.org'

gem 'rails', path: '../rails'
gem 'pg'
gem 'pry-rails'
gem 'pry-doc'
gem 'pry-byebug'
gem 'byebug'

• bundle install
• rails g model User name:string

class User < ActiveRecord::Base

binding.pry
  validates :name, length: { maximum: 30 }
end

• rails cでテキトーなuserを作成