mongodb user model

user.rb

class User
  include MongoMapper::Document
  safe
  authenticates_with_sorcery!

  key :name, String, :required => true
  key :email, String, :unique => true
  key :crypted_password, String
  key :salt, String

  key :reset_password_token, String, :default => nil
  key :reset_password_token_expires_at, Time, :default => nil
  key :reset_password_email_sent_at, Time, :default => nil

  key :remember_me_token, String, :default => nil
  key :remember_me_token_expires_at, Time, :default => nil
  key :remember_me_token, String
  
  key :last_login_at, Time, :default => nil
  key :last_logout_at, Time, :default => nil
  key :last_activity_at, Time, :default => nil

  validates_length_of :password, :minimum => 3, :message => "3 characters min", :if => :password
  validates_confirmation_of :password, :message => "should match confirmation", :if => :password
  
  many :authentications, :dependent => :destroy
  
  User.ensure_index([[:remember_me_token, 1], [:last_logout_at, -1], [:last_activity_at, -1]])

end