annotateでschemeをmodelに書き出す

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Gemfile

group :development do
  gem 'annotate'
end

bundle install

使い方

bundle exec annotate

テーブルの情報がコメントで記載されます

# == Schema Information
#
# Table name: areas
#
#  id            :bigint(8)        not null, primary key
#  name          :string           not null
#  description   :string
#  created_at    :datetime         not null
#  updated_at    :datetime         not null
#  prefecture_id :integer
#

class Area < ApplicationRecord
  # -------------------------------------------------------------------------------
  # Relations
  # -------------------------------------------------------------------------------
  extend ActiveHash::Associations::ActiveRecordExtensions
  belongs_to :prefecture
  # -------------------------------------------------------------------------------
  # Validations
  # -------------------------------------------------------------------------------
  validates :name, presence: true
end