Set up Rails

Install Ruby and Rails

NOTE:

• This document is for Mac.

  If you use windows, use Windows Subsystem for Linux. See below.

  (English) https://gorails.com/setup/windows/10

  (Japanese) https://qiita.com/Aruneko/items/c79810b0b015bebf30bb

• You can skip this if you have already set up Rails development environment on your local.

• Install brew

• Install ruby-build and rbenv

  $ brew install ruby-build
  $ brew install rbenv
  

• Add the following settings to .zshenv (.bash_profile for bash) in accordance with the install log.

  export PATH="$HOME/.rbenv/bin:$PATH"
  if which rbenv > /dev/null; then eval "$(rbenv init -)"; fi
  

• Check the available versions of ruby

  $ rbenv install -l
  

• Install readline

  $ RUBY_CONFIGURE_OPTS="--with-readline-dir=$(brew --prefix readline)"
  

  The Japanese characters are garbled without this. （これがないと、rails console で日本語入力が化ける）

  ref: http://thr3a.hatenablog.com/entry/20160828/1472324261

• Install ruby （The version can be changed. It should be 2.5.1 as of 2018/4/11）

  $ MAKE_OPTS="-j 4" rbenv install 2.5.1
  

  MAKE_OPTS="-j 4" is for parallel compile.

• Set the ruby version

  $ rbenv global 2.5.1
  $ rbenv versions
    system
  * 2.5.1
  

• Install bundler

  $ gem install bundler
  

• Install rails

  $ gem install rails
  

---

Create a Rails app

$ app_name='<your_app_name>'

$ database='mysql'
# or
$ database='postgresql'
## postgresql is more common with Rails.

$ rails_version='7.0.5'
## The version depends on the project.

$ rails _${rails_version}_ new ${app_name} --database=${database} --skip-bundle --skip-test
## --skip-test is for not installing minitest because we use rspec.  
## --skip-action-cable and --skip-turbolinks are likely options.

$ cd ${app_name}

$ git init

$ git commit --allow-empty -m "initial commit"
## This is not mandatory.

$ git add .

$ git commit -m 'add rails'

$ bundle config set --local path 'vendor/bundle'

$ bundle install

---

• You might think of using UUID for ID.