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redirect

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zfang

zfang

Programmer
Apr 3, 2002
23
US
Hi:

I have a problem related to redirect. Here is the senario:

There are 2 perl scripts: A.cgi,B.cgi, which are located in two different servers.
1) A user fills a form
2)A.cgi process the form and redirects to B.cgi with passing parameters. It's required that the browse displays a message like "In processing" before B.cgi finishes proceessing and redirects back to A.cgi.

Following is the script doing display message and redirect:

use CGI qw/:standard/;
my $q = new CGI;
#
#doing sth processing the form
#
print header("text/html");
print "In processing...";
my $url = "$q->redirect($url);

However, this script doesn;t work as expected, because the
line

print header("tect/html");

is before the line

$q->redirect($url);

If I rearrange them as

my $url = "$q->redirect($url);
print header("text/html");
print "In processing...";

I will not get the message "In processing..." printed out when B.cgi is processing.

Could anyone give me advice how to solve this problem?.

Thanks

George
 
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can you use javascript to display message "in processing"?
 
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That is becuase that the CGI module will not redirect when a html header is created. Try "perldoc CGI" and read more about it.

Hope this helps.
 
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scoon:

Thanks.
I know it will not direct when a html header is created. But is there a way to solve my problem.
 
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Try using a meta redirect instead, like this:
Code: 
$url = "[URL unfurl="true"]http://www.bydisn.com";[/URL]
$pause = 2; # 2 seconds
print <<END;
<html>
<head>
<meta http-equiv=&quot;refresh&quot; content=&quot;$pause;URL=$url&quot;>
<title>REDIRECT</title>
</head>
<body>
<h1>REDIRECT</h1>
</body>
</html>
END
Tracy Dryden
tracy@bydisn.com

Meddle not in the affairs of dragons,
For you are crunchy, and good with mustard. [dragon]
 
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Tracy:

Thanks for your suggestion. I guess your code will redirect to B.cgi if set $url=&quot;after the message &quot;REDIRECT&quot; is shown for 2 seconds. However, no message is displayed when B.cgi is processing, right? How can a message be displayed when B.cgi is processing?

George
 
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I would do that with javascript, before you call the cgi program. Thread215-152691 shows one way to create a flashing &quot;working&quot; message. Tracy Dryden
tracy@bydisn.com

Meddle not in the affairs of dragons,
For you are crunchy, and good with mustard. [dragon]
 
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Tracy:

Thank you very much. It works pretty good.

George
 
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You're welcome. Glad to be of assistance. Tracy Dryden
tracy@bydisn.com

Meddle not in the affairs of dragons,
For you are crunchy, and good with mustard. [dragon]
 
Upvote 0 Downvote
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