converted to_excel plugin to helper to work in CI 2.0

[eluser]Brad K Morse[/eluser]
Thanks!

That cleared up that error, now checking my error log and see this error:

PHP Fatal error: Call to a member function field_data() on a non-object in /web/internal-applications/assessment/application/helpers/to_excel_helper.php on line 10

Line 10:

Code:

$fields = $query->field_data();