Hi, I'm trying to put some subroutines into a module so I can easily re-use them. But I'm not really clear on the syntax. I'm trying to access a CGI object in package main from a subroutine declared in a module. Is this sub-classing? Here's the script:
#!/usr/bin/perl -wT use strict; use Shortcuts qw(debug print_at_form create_at_job); BEGIN {&debug} use CGI; my $q = new CGI; print $q->header(); print "<center>\n"; print_at_form($q); &create_at_job("touch /home/foo/some_file\n") if $q->param('Submit');
This creates the form but when I try to submit it, I get this error: Can't call method "param" on an undefined value at /usr/lib/perl5/site_perl/5.6.0/Shortcuts.pm line 50 I think this is happening because I'm putting a COPY of the cgi object ($q) into &print_at_form so the &create_at_job doesn't know what I'm talking about. I was also wondering if I should be using this function-oriented code with an object; it doesn't seem right somehow. I tried changing $q->startform() in print_at_form to $main::q->startform() (throughout the sub) but that didn't work either. Here's the module:
package Shortcuts; # See the bottom of this file for the POD documentation. Search for t +he # string '=head'. use strict; use diagnostics; use vars qw($q @ISA @EXPORT_OK $VERSION); use subs qw(debug); use Exporter; $VERSION = 1.00; @ISA = qw(Exporter); @EXPORT_OK = qw(debug print_at_form create_at_job); ### subroutines ### sub debug { use CGI::Carp qw(carpout fatalsToBrowser); &carpout (\*STDOUT); } sub print_at_form { my $q = $_[0]; print $q->startform(); print "Hour"; print $q->popup_menu(-name=>'hour', -values=>[1..12]); print "Minutes"; print $q->popup_menu(-name=>'minute', -values=>[qw/00 05 10 15 20 +25 30 35 40 45 50 55/]); print "Day"; print $q->popup_menu(-name=>'day', -values=>[qw/Today Mon Tue Wed +Thu Fri Sat Sun/]); print $q->radio_group(-name=>'meridiem', -values=>[qw/am pm/]); print $q->submit(-name=>'Submit'); print $q->endform(); return $q; } sub create_at_job { my %time = &_untaint; my $string = "/usr/bin/at $time{hour}:$time{minute} $time{meridiem +} $time{day}"; my $pid = open(ATJOB, "| $string") or die "Couldn't fork: $!\n"; print ATJOB $at_command; close(ATJOB); print "Your job has been scheduled for <b>$time{hour}:$time{minute +} $time{meridiem} $time{day}</b>"; } sub _untaint { my %time; $ENV{"PATH"} = ""; if ($q->param('hour') =~ /^(1|2|3|4|5|6|7|8|9|10|11|12)$/) { $time +{hour} = $1; } else { die "Can't untaint 'hour'"} if ($q->param('minute') =~ /^(00|05|10|15|20|25|30|35|40|45|50|55) +$/) { $time{minute} = $1; } else { die "Can't untaint 'minute'"} if ($q->param('day') =~ /^(Today|Mon|Tue|Wed|Thu|Fri|Sat|Sun|)$/) +{ $time{day} = $1; } else { die "Can't untaint 'day'"} if ($q->param('meridiem') =~ /^(am|pm)$/) { $time{meridiem} = $1; +} else { die "Can't untaint 'meridiem'"} return %time; } 1;

In reply to accessing CGI object from a subroutine in another package. by kingman

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.