Hi all, I'm having trouble getting DTML to format None values the way I want them. I have a database table with a bunch of string columns which may be NULL. They range in size from 2 characters to 256. I want to be able to edit them in a HTML form. The way I've been constructing this form is something like: <INPUT TYPE="TEXT" NAME="title" VALUE="<!--#var COURSE-->" MAXLENGTH=256 SIZE=20> <INPUT TYPE="TEXT" NAME="language" VALUE="<!--#var LANGUAGE null=""-->" MAXLENGTH=2 SIZE=2> and so on... The null="" argument to var doesn't get used unless I supply a fmt= argument _and_ that format string fails to format the value. The problem is that the representation I want is fmt="%s", and that formats a None value quite nicely. I can just hear Jim Fulton saying "this problem disappears using Missing.Value" but I don't want to have to integrate Missing.Value into the rest of the codebase we have. At the moment, I've patched the DT_Var.py render() method so it detects the null= argument regardless of the fmt= argument: *** DT_Var.py.old Fri Feb 26 11:19:49 1999 --- DT_Var.py Fri Feb 26 11:19:53 1999 *************** *** 269,274 **** --- 269,276 ---- val = special_formats[fmt](val, name, md) elif fmt=='': val='' else: val = fmt % val + elif have_arg('null') and val is None: + val = args['null'] # finally, pump it through the actual string format... fmt=self.fmt YMMV, Richard