Clearing multi-valued parameters using CGI.pm

esharris has asked for the wisdom of the Perl Monks concerning the following question:

Suppose I have a field that takes multiple values, like a checkbox group. How do I use CGI::param to clear out the parameter values? Based on the documentation, I thought CGI::param(-name => 'xxx', -value => []); would be the solution.

#!/usr/bin/perl -w

use strict;

use CGI;

CGI::param(-name => 'xxx', -value => [1,2,3]);

print join(',', CGI::param(-name => 'xxx'))."\n";

CGI::param(-name => 'xxx', -value => []);

print join(',', CGI::param(-name => 'xxx'))."\n";
[download]

Unfortunately, the preceding code prints the following.

1,2,3
1,2,3
[download]

Comment on Clearing multi-valued parameters using CGI.pm Select or Download Code

Replies are listed 'Best First'.
Re: Clearing multi-valued parameters using CGI.pm by wfsp (Abbot) on Jan 26, 2006 at 15:48 UTC
Perhaps look at the docs and scoll down to DELETING A PARAMETER COMPLETELY.	[reply]
Re^2: Clearing multi-valued parameters using CGI.pm by esharris (Monk) on Mar 03, 2006 at 16:18 UTC
I sent an e-mail to Lincoln Stein about this issue. In his reply, he said this is a bug in the code. He thanked me for finding the bug and he fixed the bug in the next version of CGI.	[reply]
Re: Clearing multi-valued parameters using CGI.pm by chargrill (Parson) on Jan 26, 2006 at 15:37 UTC
This seems to work for me: `CGI::param(-name => 'xxx', -value => "");` [download] ---chargrill `$/ = q#(\w)# ; sub sig { print scalar reverse join ' ', @_ } + sig map { s$\$/\$/$\$2\$1$g && $_ } split( ' ', ",erckha rlPe erthnoa stJu +" );` [download]	[reply] [d/l] [select]