projects.mako.cc - selectricity-live/blob - vendor/plugins/acts_as_authenticated/generators/authenticated/templates/model.rb

   1 require 'digest/sha1'
   2 class <%= class_name %> < ActiveRecord::Base
   3   # Virtual attribute for the unencrypted password
   4   attr_accessor :password
   5
   6   validates_presence_of     :login, :email
   7   validates_presence_of     :password,                   :if => :password_required?
   8   validates_presence_of     :password_confirmation,      :if => :password_required?
   9   validates_length_of       :password, :within => 4..40, :if => :password_required?
  10   validates_confirmation_of :password,                   :if => :password_required?
  11   validates_length_of       :login,    :within => 3..40
  12   validates_length_of       :email,    :within => 3..100
  13   validates_uniqueness_of   :login, :email, :case_sensitive => false
  14   before_save :encrypt_password
  15
  16   # Authenticates a user by their login name and unencrypted password.  Returns the user or nil.
  17   def self.authenticate(login, password)
  18     u = find_by_login(login) # need to get the salt
  19     u && u.authenticated?(password) ? u : nil
  20   end
  21
  22   # Encrypts some data with the salt.
  23   def self.encrypt(password, salt)
  24     Digest::SHA1.hexdigest("--#{salt}--#{password}--")
  25   end
  26
  27   # Encrypts the password with the user salt
  28   def encrypt(password)
  29     self.class.encrypt(password, salt)
  30   end
  31
  32   def authenticated?(password)
  33     crypted_password == encrypt(password)
  34   end
  35
  36   def remember_token?
  37     remember_token_expires_at && Time.now.utc < remember_token_expires_at
  38   end
  39
  40   # These create and unset the fields required for remembering users between browser closes
  41   def remember_me
  42     self.remember_token_expires_at = 2.weeks.from_now.utc
  43     self.remember_token            = encrypt("#{email}--#{remember_token_expires_at}")
  44     save(false)
  45   end
  46
  47   def forget_me
  48     self.remember_token_expires_at = nil
  49     self.remember_token            = nil
  50     save(false)
  51   end
  52
  53   protected
  54     # before filter
  55     def encrypt_password
  56       return if password.blank?
  57       self.salt = Digest::SHA1.hexdigest("--#{Time.now.to_s}--#{login}--") if new_record?
  58       self.crypted_password = encrypt(password)
  59     end
  60
  61     def password_required?
  62       crypted_password.blank? || !password.blank?
  63     end
  64 end