powermail

added patch.

Now, the piVar-Rows are based on the headerPiVars instead of the piVars which are available in the record itself

foreach ($headerPiVars as $key => $headerValue) {

. So, only the piVars which are defined in the header are shown.

The old implementation creates the header based on the piVars in the record with the most piVars. Now all used piVars in all records are taken to create the header.

This example works now:

<piVars>
   <uid2>Hello</uid2>
   <uid3>World</uid3>
<...

<piVars>
   <uid3>World</uid3>
   <uid2>Hello</uid2>
<...

But if an field gets deleted and another gets added, it will export all fields.

This example shows two records, where the field with uid3 gets deleted and a new one uid4 is created:

<piVars>
   <uid2>Hello</uid2>
   <uid3>World</uid3>
</piVars>

<piVars>
   <uid2>Hello</uid2>   
   <uid4>http://www.typo3.org/</uid4>
<piVars>

The export would be look like this:

Label UID2;uid3;Label UID4;
Hello;World;;
Hello;;http://www.typo3.org/

As the Field uid3 is deleted, we do not get the label via getFieldLabelFromBackend. I am not sure, if we should supress deleted fields - or if we allow the function getFieldLabelFromBackend to ignore enableFields.

These changes are not done for generateXlsTable, as i am not able at the moment, to test it. But it should be pretty simple to change generateXlsTable too.