https://traversal.ist/how-to-authenticate-anonymous-users-in-rails - create users migration

01_create_users.rb

class CreateUsers < ActiveRecord::Migration[6.0]
  def change
    create_table :users do |t|
      t.string :email
      t.string :display_name
      t.string :password_digest

      t.timestamps
    end
  end
end