First checkin

app/models/venue.rb

@@ -0,0 +1,14 @@
+class Venue < ActiveRecord::Base
+  has_many :conferences
+  before_create :generate_guid
+
+  private
+
+  def generate_guid
+    begin
+      guid = SecureRandom.urlsafe_base64
+    end while Venue.where(:guid => guid).exists?
+    self.guid = guid
+  end
+
+end