I am not positive, but I believe the CGI spec itself does not allow for
an undefined value to be passed. You might have to dig into how mod_perl
itself is getting the querystring values. You may be able to test the
QueryString using the WebUtils taglib.
if ( <webutil:query_string /> =~ /foo=&/ ) {
$foo = undef;
} else {
$foo = <param:foo />;
}
Don Shanks
Senior Applications Systems Engineer
Cell Systems Initiative - University of Washington
[EMAIL PROTECTED]
-----Original Message-----
From: Nigel Peck [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, 24 July, 2002 07:38
To: [EMAIL PROTECTED]
Subject: <param:foo/>
How can I check to see if foo has been passed, (and this is the
important part), even if it was empty.
e.g. bar.xsp?foo=&foo2=test
I know I can do
if (<param:foo/>)
but that returns false when it doesn't exist and when it's empty.
TIA
Nigel
ITM Business Solutions
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