Validate presence of name on group

app/controllers/publics_controller.rb

@@ -26,7 +26,7 @@ class PublicsController < ApplicationController
     begin
       @user = Person.first(:id => params[:id]).owner
     rescue NoMethodError => e
-      Rails.logger.error("Received post #{params[:xml]} for nonexistent person #{params[:id}")
+      Rails.logger.error("Received post #{params[:xml]} for nonexistent person #{params[:id]}")
       return
     end
     Rails.logger.debug "PublicsController has received: #{params[:xml]}"

app/models/group.rb

@@ -2,6 +2,7 @@ class Group
   include MongoMapper::Document
   
   key :name, String
+  validates_presence_of :name
 
   key :person_ids, Array
   key :request_ids, Array