+ def authenticated?(password)
+ crypted_password == encrypt(password)
+ end
+
+ def remember_token?
+ remember_token_expires_at && Time.now.utc < remember_token_expires_at
+ end
+
+ # These create and unset the fields required for remembering users between browser closes
+ def remember_me
+ self.remember_token_expires_at = 2.weeks.from_now.utc
+ self.remember_token = encrypt("#{email}--#{remember_token_expires_at}")
+ save(false)
+ end
+
+ def forget_me
+ self.remember_token_expires_at = nil
+ self.remember_token = nil
+ save(false)
+ end
+
+ protected
+ # before filter
+ def encrypt_password
+ return if password.blank?
+ self.salt = Digest::SHA1.hexdigest("--#{Time.now.to_s}--#{login}--") if new_record?
+ self.crypted_password = encrypt(password)
+ end
+
+ def password_required?
+ crypted_password.blank? || !password.blank?
+ end
+ def validate
+ # E-mail regex, moderate complexity
+ # Stolen from http://www.regular-expressions.info/email.html
+ errors.add(:email, "is not valid") unless email =~
+ /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i
+ errors.add(:login, "should not begin or end with spaces") if login.strip!
+ errors.add(:login, "should contain only letters, numbers, and spaces") unless login =~ /^[A-Za-z0-9 ]*$/
+ end
+end