Submitted by Jonathan Dale on Fri, 03/15/2013 - 9:30am
@Goran: Without knowing the name of the field, the template_preprocess_field function may not be the best way to accomplish this. You would need to look at the $vars array to determine if there is anything unique about the field that allows you to target it. Otherwise, as you have noted, you need to use the field template file.
