Adding database index on full-text search for better performance.

db/migrate/20130808195123_add_search_index_to_packages.rb

@@ -0,0 +1,11 @@
+class AddSearchIndexToPackages < ActiveRecord::Migration
+  def up
+    execute "create index packages_name on packages using gin(to_tsvector('english', name))"
+    execute "create index packages_description on packages using gin(to_tsvector('english', description))"
+  end
+
+  def down
+    execute "drop index packages_name"
+    execute "drop index packages_description"
+  end
+end