Upgrade costs plugin after migration.

-  Use work_package parameter to pass the work package to the summarize method
- Access journal directly in acts_as_journalized.

app/models/cost_object.rb

@@ -15,8 +15,8 @@ class CostObject < ActiveRecord::Base
   acts_as_attachable :after_remove => :attachment_removed
 
   acts_as_journalized :event_type => 'cost-object',
-    :event_title => Proc.new {|o| "#{l(:label_cost_object)} ##{o.journaled.id}: #{o.subject}"},
-    :event_url => Proc.new {|o| {:controller => 'cost_objects', :action => 'show', :id => o.journaled.id}},
+    :event_title => Proc.new {|o| "#{l(:label_cost_object)} ##{o.id}: #{o.subject}"},
+    :event_url => Proc.new {|o| {:controller => 'cost_objects', :action => 'show', :id => o.id}},
     :activity_type => superclass.plural_name,
     :activity_find_options => {:include => [:project, :author]},
     :activity_timestamp => "#{table_name}.updated_on",

lib/open_project/costs/patches/work_packages_helper_patch.rb

@@ -7,47 +7,41 @@ module OpenProject::Costs::Patches::WorkPackagesHelperPatch
         attributes = []
 
         attributes << work_package_show_table_row(:cost_object) do
-                        work_package.cost_object ?
-                          link_to_cost_object(work_package.cost_object) :
-                           "-"
-                      end
+          work_package.cost_object ?
+            link_to_cost_object(work_package.cost_object) :
+            "-"
+        end
         if User.current.allowed_to?(:view_time_entries, @project) ||
-           User.current.allowed_to?(:view_own_time_entries, @project)
+          User.current.allowed_to?(:view_own_time_entries, @project)
 
           attributes << work_package_show_table_row(:spent_hours) do
-                          #TODO: put inside controller or model
-                          summed_hours = @time_entries.sum(&:hours)
+            # TODO: put inside controller or model
+            summed_hours = @time_entries.sum(&:hours)
 
-                          summed_hours > 0 ?
-                            link_to(l_hours(summed_hours), work_package_time_entries_path(work_package)) :
-                            "-"
-                        end
+            summed_hours > 0 ?
+              link_to(l_hours(summed_hours), work_package_time_entries_path(work_package)) :
+              "-"
+          end
 
         end
-
         attributes << work_package_show_table_row(:overall_costs) do
-                        @overall_costs.nil? ?
-                          "-" :
-                          number_to_currency(@overall_costs)
-                      end
+          @overall_costs.nil? ?
+            "-" :
+            number_to_currency(@overall_costs)
+        end
 
         if User.current.allowed_to?(:view_cost_entries, @project) ||
-           User.current.allowed_to?(:view_own_cost_entries, @project)
+          User.current.allowed_to?(:view_own_cost_entries, @project)
 
           attributes << work_package_show_table_row(:spent_units) do
-
-                          summed_costs = summarized_cost_entries(@cost_entries)
-
-                          #summed_costs > 0 ?
-                            summed_costs# :
-                          #  "-"
-                        end
+            summarized_cost_entries(@cost_entries, work_package)
+          end
         end
 
         attributes
       end
 
-      def summarized_cost_entries(cost_entries, create_link=true)
+      def summarized_cost_entries(cost_entries, work_package, create_link=true)
         last_cost_type = ""
 
         return "-" if cost_entries.blank?
@@ -72,10 +66,10 @@ module OpenProject::Costs::Patches::WorkPackagesHelperPatch
             # TODO why does this have project_id, work_package_id and cost_type_id params?
             str_array << link_to(txt, { :controller => '/costlog',
                                         :action => 'index',
-                                        :project_id => @work_package.project,
-                                        :work_package_id => @work_package,
+                                        :project_id => work_package.project,
+                                        :work_package_id => work_package,
                                         :cost_type_id => k },
-                                       { :title => k.name })
+                                        { :title => k.name })
           else
             str_array << "<span title=\"#{h(k.name)}\">#{txt}</span>"
           end