cache walker in cost_query

git-svn-id: https://dev.finn.de/svn/cockpit/branches/reporting_merge@1134 7926756e-e54e-46e6-9721-ed318f58905e
15 years ago · d8ee5c93cc
parent 9018c50673
commit d8ee5c93cc
1 changed files with 1 additions and 1 deletions
--- a/app/models/cost_query.rb
+++ b/app/models/cost_query.rb
@ -14,7 +14,7 @@ class CostQuery < ActiveRecord::Base
  end
  def walker
-    CostQuery::Walker.new self
+    @walker ||= CostQuery::Walker.new self
  end
  def walk(&block)