Question

Simulating Back Button on Submit

Asked by: Biffo

I am trying to return back to original page upon submit to a perl script. I was using:
<meta HTTP-EQUIV="Refresh"CONTENT="0;URL=javascript:history.go(-2)">

This works fine for first submission, but fails on sequent submissions during the same session.

Is there another method for returning the user back one or two pages after submiting to a perl script?

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Asked On
2000-09-26 at 05:58:06ID11377638
Topic

Perl Programming Language

Participating Experts
4
Points
50
Comments
7

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Answers

 

by: chris18Posted on 2000-09-26 at 06:01:40ID: 4444226

every time a user submits you could have a counter say $xx

then

instead of using

<meta HTTP-EQUIV="Refresh"CONTENT="0;URL=javascript:history.go(-2)">

use

<meta HTTP-EQUIV="Refresh"CONTENT="0;URL=javascript:history.go(-$xx)">

But THIS WILL WORK only if the pages is dynamically generated using a cgi script !!

 

by: amandeepPosted on 2000-09-26 at 07:58:12ID: 4446359

Rather use $cgi->redirect in ur perlscript which processes this form.

 

by: maneshrPosted on 2000-09-26 at 08:26:11ID: 4446807

Biffo,

"..<meta HTTP-EQUIV="Refresh"CONTENT="0;URL=javascript:history.go(-2)"> .."

The javascript approach has some disadvantages to it.

1) what happens if the user has disabled javascript in the browser?
2) what happens if the user bookmarks the page, closes the browser, re-opens the browser, visits the bookmarked page. where will the above code take the user to??
3) what if the above link is embedded in another HTML page?

"..Is there another method for returning the user back one or two pages after submiting to a perl script? .."

there is a way one can go one page back, using PERL and hidden variables. this method, though not 100% accurate, would involve modifying the PERL script and would be better that the javascript approach.

here is how it would work.

lets say your PERL script is called by xyz.html.

you use the HTTP_REFERER variable and get the complete location of the page (xyz.html) that called this PERL script.

The PERL script does some processing and throws an output page. This page has a HTML form with the name of the HTML page (xyz.html) as a hidden HTML element and the "Back to the html page" as a submit button.

That way when you click on the "Back to the html page" button, the hidden variable is passed to your another PERL script, that would just redirect you to the page!!

Hope that helps.

 

by: melvynmyersPosted on 2000-10-04 at 18:16:23ID: 4588793

Well, since you're already submitting a form, you can have a hidden field that contains the URL you want to move back to.

Like....

<INPUT TYPE=HIDDEN NAME="URL" VALUE="address goes here">

THe above line can be generated as required by the Perl script.

Hope that makes sense.

Cheers,

Mel

 

by: maneshrPosted on 2000-10-28 at 21:15:12ID: 4962976

Biffo,

Did you get the solution you were looking for?

What solution, if any, did you use?

Please let us know.

 

by: maneshrPosted on 2000-11-29 at 19:10:56ID: 5674830

Biffo,

Did you get the solution you were looking for?

What solution, if any, did you use?

Please let us know.

 

by: maneshrPosted on 2001-01-01 at 13:09:15ID: 63090

Biffo,

                     Did you get the solution you were looking for?

                     What solution, if any, did you use?

                     Please let us know.

20120131-EE-VQP-002

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