checkbox — return user-supplied value if its length is 1 or more, an empty string otherwise
The filter checks for the length of input. When the length of input is non-zero, the filter returns input itself. When the length is zero, the filter returns an empty string.
The filter is suitable for retrieving values out of HTML checkboxes.
Interchange 5.9.0:
Source: code/Filter/checkbox.filter
Lines: 17
# Copyright 2002-2007 Interchange Development Group and others # Copyright 1996-2002 Red Hat, Inc. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. See the LICENSE file for details. # # $Id: checkbox.filter,v 1.3 2007-03-30 23:40:44 pajamian Exp $ CodeDef checkbox Filter CodeDef checkbox Routine <<EOR sub { my $val = shift; return length($val) ? $val : ''; } EOR