It's been waaay too long since I last committed. Eesh.

rails/map-mash/db/migrate/20120304151123_create_maps.rb

@@ -1,8 +1,7 @@
 class CreateMaps < ActiveRecord::Migration
   def self.up
     create_table :maps do |t|
-      t.string :name
-      t.string :unique_hash
+      t.string :name, :null => false
 
       t.timestamps
     end

rails/map-mash/db/migrate/20120304164625_create_mashes.rb

@@ -1,10 +1,10 @@
 class CreateMashes < ActiveRecord::Migration
   def self.up
     create_table :mashes do |t|
-      t.string :requester
-      t.integer :map_a
-      t.integer :map_b
-      t.integer :winner
+      t.string :requester, :null => false
+      t.integer :map_a, :null => false
+      t.integer :map_b, :null => false
+      t.integer :winner, :null => false
 
       t.timestamps
     end