Mongoid Rails model concern

user_jwt.rb

# app/models/concerns/user_jwt.rb
module UserJwt
  extend ActiveSupport::Concern

  included do
    include ActiveModel::SecurePassword
    has_secure_password

    field :email, type: String
    field :phone, type: String
    field :first_name, type: String
    field :last_name, type: String
    field :password_digest, type: String
    field :username, type: String

    validates :email, presence: true, uniqueness: true, format: { with: URI::MailTo::EMAIL_REGEXP }
    validates :password, length: { minimum: 8 }, if: -> { new_record? || password }

    def full_name
      "#{first_name} #{last_name}"
    end
  end
end