RUBY

devise add trackable

rails generate migration AddDeviseTrackableColumnsToUsers

# /db/migrate
class AddDeviseTrackableColumnsToUsers < ActiveRecord::Migration[6.1]
  def change
    add_column :users, :sign_in_count, :integer, default: 0, null: false
    add_column :users, :current_sign_in_at, :datetime
    add_column :users, :last_sign_in_at, :datetime
    add_column :users, :current_sign_in_ip, :string
    add_column :users, :last_sign_in_ip, :string
  end
end


# app/models/user.rb
class User < ApplicationRecord
  # Include default devise modules. Others available are:
  # :registerable, :recoverable, :rememberable, :validatable, :confirmable,
  # :lockable, :timeoutable, :trackable and :omniauthable
  devise :database_authenticatable, :trackable
end