Calculating totals in report

Question

I have an invoice report that has billing categories and under each billing category there are one or more bliing category lines. I want to calculate the total for each billing category e.g.
BILLING CATEGORY 1
Billing Category 1 0.00
Billing Category 2 1.00
Category Total 1.00
BILLING CATEGORY 2
Billing Category 1 0.00
Billing Category 2 1.00
Category Total 1.00
Client Total 2.00
Can anyone please help me by giving me a step-by-step guide? I have created the query to retrieve data from the database and saved the data in an XML document. I have created the RTF template and so far it is not showing the Category Total and Client Total.

Answer 1

Hi,
It's quite difficult to give you an exact step-by-step guide without your XML, but I'll give it a go. Given the following XML:
<billing_categories>
<billing_category>
  <category>BILLING CATEGORY 1</category>
  <sub_category>Billing Category 1</sub_category>
  <amount>0.00</amount>
</billing_category>
<billing_category>
  <category>BILLING CATEGORY 1</category>
  <sub_category>Billing Category 1</sub_category>
  <amount>1.00</amount>
</billing_category>
<billing_category>
  <category>BILLING CATEGORY 2</category>
  <sub_category>Billing Category 1</sub_category>
  <amount>0.00</amount>
</billing_category>
<billing_category>
  <category>BILLING CATEGORY 2</category>
  <sub_category>Billing Category 1</sub_category>
  <amount>1.00</amount>
</billing_category>
</billing_categories>In your RTF Template you would need the folliowing:
<?for-each-group:billing_category;./category?> <?category?>
<?for-each:current-group()?> <?sub_category?> <?amount?> <?end for-each?>
Category Total: <?sum(current-group()/amount)?> <?end for-each-group?>
Client Total: <?sum(amount)?>Each <?command?> should be placed in a seperate Text Form Field within your RTF.
Hope this helps
Andy