grails tag library question

Question

Hello, I am using Grails in an application that allows the inline editing of data in a data grid. There are certain key fields that may be defined and should not be editable. Here is some example code from the tag lib that I am using

case "dropdown":
            out << "<select id='"+prefix + id+"' name='" + fieldData.code + "'>"
            out << "<option value=''/>"
            def vals = fieldData.value.split(",")
            vals.each() {
                out << "<option "+ (value == it ? "selected" : "") +" value='" + it + "'>" + it + "</option>"
            }
            out << "</select>"
            break

Basically I need to add a class to the form element so that when it renders I can disable it using jQuery. Do I need an if statement for each form control or is there another way to accomplish this with Grails?