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git-svn-id: http://theory.cpe.ku.ac.th/grader/web/trunk@1 6386c4cd-e34a-4fa8-8920-d93eb39b512e
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pramook-
app/models/user.rb
| 45 lines
| 1.0 KiB
| text/x-ruby
| RubyLexer
|
pramook
|
r0 | require 'digest/sha1' | ||
| class User < ActiveRecord::Base | ||||
| has_and_belongs_to_many :roles | ||||
| validates_presence_of :login | ||||
| validates_presence_of :full_name | ||||
| validates_presence_of :password, :if => :password_required? | ||||
| validates_length_of :password, :within => 4..20, :if => :password_required? | ||||
| validates_confirmation_of :password, :if => :password_required? | ||||
| attr_accessor :password | ||||
| before_save :encrypt_new_password | ||||
| def self.authenticate(login, password) | ||||
| user = find_by_login(login) | ||||
| return user if user && user.authenticated?(password) | ||||
| end | ||||
| def authenticated?(password) | ||||
| hashed_password == encrypt(password,salt) | ||||
| end | ||||
| def admin? | ||||
| self.roles.detect {|r| r.name == 'admin' } | ||||
| end | ||||
| # protected | ||||
| def encrypt_new_password | ||||
| return if password.blank? | ||||
| self.salt = (10+rand(90)).to_s | ||||
| self.hashed_password = encrypt(password,salt) | ||||
| end | ||||
| def password_required? | ||||
| hashed_password.blank? || !password.blank? | ||||
| end | ||||
| def encrypt(string,salt) | ||||
| Digest::SHA1.hexdigest(salt + string) | ||||
| end | ||||
| end | ||||