Hello Monks,

I have been trying to 'extend' CGI.pm, to customise it to a site I am working on. (btw. Are there many other monks who approach this problem in this way?)

While most of it does what I want, when I call the header() method, my instance does not behave as I expect.

Here is a simple example of what is going wrong. My module looks like 

#!/usr/bin/perl -w

package IsaCGI;
use strict;
use CGI;
use vars qw(@ISA);
@ISA=qw(CGI);

sub new{
    my $this={};
    bless $this,__PACKAGE__;
    $this->SUPER::new({});
    return $this;
}

sub my_method{
   return "hello from isa_cgi\n";
}
1;

[download]

I am using the following code to test the module 

#!/usr/bin/perl -w

use strict;
use IsaCGI;
use diagnostics;

my $q=new IsaCGI;
print $q->header;
print $q->start_html;
print $q->my_method;

[download]

when I call the header() method, it prints 

Use of uninitialized value at (eval 4) line 28 (#1)
    
    (W) An undefined value was used as if it were already defined.  It
+ was
    interpreted as a "" or a 0, but maybe it was a mistake.  To suppre
+ss this
    warning assign an initial value to your variables.
    
Content-Type: text/html; charset=

[download]

whereas, if I change use IsaCGI and new IsaCGI to use CGIand new CGI I get

Content-Type: text/html; charset=ISO-8859-1

[download]

Can someone enlighten me as to why this is happening? Where has the charset info gone?

Thank you

thinker

In reply to Problem with header() method when extending CGI.pm by thinker

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