Added methods to calculate the costs of an issue.

Also reintroduced Issue list columns (originally removed in r373)

git-svn-id: https://dev.finn.de/svn/cockpit/trunk@389 7926756e-e54e-46e6-9721-ed318f58905e

lib/issue_patch.rb

@@ -44,6 +44,26 @@ module IssuePatch
       validate_without_cost_object
     end
     
+    def material_costs
+      @material_costs ||= cost_entries.visible(User.current, self.project).sum("CASE
+        WHEN #{CostEntry.table_name}.overridden_costs IS NULL THEN
+          #{CostEntry.table_name}.costs
+        ELSE
+          #{CostEntry.table_name}.overridden_costs END")
+    end
+    
+    def labor_costs
+      @labor_costs ||= time_entries.visible(User.current, self.project).sum("CASE
+        WHEN #{TimeEntry.table_name}.overridden_costs IS NULL THEN
+          #{TimeEntry.table_name}.costs
+        ELSE
+          #{TimeEntry.table_name}.overridden_costs END")
+    end
+    
+    def overall_costs
+      labor_costs + material_costs
+    end
+    
     # Wraps the association to get the Cost Object subject.  Needed for the 
     # Query and filtering
     def cost_object_subject

lib/query_patch.rb

@@ -12,6 +12,11 @@ module QueryPatch
     base.class_eval do
       unloadable # Send unloadable so it will not be unloaded in development
       
+      base.add_available_column(QueryColumn.new(:cost_object_subject))
+      base.add_available_column(QueryColumn.new(:material_costs))
+      base.add_available_column(QueryColumn.new(:labor_costs))
+      base.add_available_column(QueryColumn.new(:overall_costs))
+      
       unless instance_methods.include? "available_filters_without_costs"
         alias_method_chain :available_filters, :costs
       end