Updates from the past fortnight

app/models/email_confirmation.rb

@@ -0,0 +1,36 @@
+class EmailConfirmation < ActiveRecord::Base
+	belongs_to :user
+	before_create :prepare
+
+	def prepare
+		# clean up any expired records
+		EmailConfirmation.delete_all(['expiry < ?', Time.now])
+
+		# fill in defaults
+		self.expiry ||= Time.now + 1.day
+
+		while self.token.nil? do
+			# create a token based on the user id and current time
+			self.token = generate_token
+
+			# conflicts should be extremely rare, but let's just be sure
+			if EmailConfirmation.exists?(:token => self.token)
+				self.token = nil # keep the loop going
+				# because we generate the token based on the time, just make sure
+				#  some time has passed
+				sleep 0.1
+			end
+		end
+	end
+
+	def valid_for_user?(user)
+		user.id == user_id && expiry < Time.now
+	end
+
+	protected
+
+		def generate_token
+			Digest::SHA256.hexdigest(user_id.to_s + (Time.now.to_f * 1000000).to_i.to_s)
+		end
+
+end

app/models/user.rb

@@ -21,4 +21,8 @@ class User < ActiveRecord::Base
     has_many :authentications, :dependent => :destroy
     accepts_nested_attributes_for :authentications
 
+	def can_translate?
+		is_translator
+	end
+
 end