split the field mapping to be able to hook into it

git-svn-id: https://dev.finn.de/svn/cockpit/branches/reporting_merge@1679 7926756e-e54e-46e6-9721-ed318f58905e

lib/xls_report/cost_reports_controller_patch.rb

@@ -30,13 +30,26 @@ if require_dependency 'cost_reports_controller'
           end
         end
 
+        # Overwrite a few mappings.
+        def field_representation_map(key, value)
+          case key.to_sym
+          when :activity_id               then mapped value, Enumeration, l(:caption_material_costs)
+          when :project_id                then (l(:label_none) if value.to_i == 0) or Project.find(value.to_i).name
+          when :user_id, :assigned_to_id  then (l(:label_none) if value.to_i == 0) or User.find(value.to_i).name
+          when :issue_id
+            return l(:label_none) if value.to_i == 0
+            issue = Issue.find(value.to_i)
+            "#{issue.project + " - " if @project}#{issue.tracker} ##{issue.id}: #{issue.subject}"
+          else super(key, value)
+          end
+        end
+
         # Build an xls file from a cost report.
         def report_to_xls
           find_optional_project
           generate_query
           set_cost_type
 
-          debugger
           sb = SpreadsheetBuilder.new
           sb.add_title("#{@project.name + " >> " if @project}#{l(:cost_reports_title)} (#{format_date(Date.today)})")