I have a set of search fields configured for a Dynamic User Directory module. Several of the search fields are configured as Combo Boxes and use the "values:" list for the Input Values field.
The problem is that, unlike the SQL input type, there is no way (I could find) for the user not to select anything. By default, the first item in the list is selected and there's no way to unselect it. As such, the search is basically rendered useless unless those fields are removed.
Is there a way to include something in the list of values to indicate a non-selection? Would a wildcard character work?