Refactoring rooms

app/models/room.rb

@@ -6,13 +6,16 @@ class Room < ActiveRecord::Base
 
   before_create :generate_guid
 
+  validates :name, presence: true
+
+  validates :size, numericality: { only_integer: true, greater_than: 0 }, allow_nil: true
+
+  validates :size, presence: true, if: :public?
+
   private
 
   def generate_guid
     guid = SecureRandom.urlsafe_base64
-#     begin
-#       guid = SecureRandom.urlsafe_base64
-#     end while Person.where(:guid => guid).exists?
     self.guid = guid
   end
 end