Browser back problem : Does Ofbiz has implicit session management?

[Sayoke Shome]

Hi all,

I am developing a shopping cart for some configurable good (Say
configurable pc). Since it is little complex configuration, my
requirement is to make sure that if user clicks on browser back button
instead of the back button I have provided him, page should expire. And
show "this page has expired". And when user clicks refresh on that
expired page he is brought back on the page he was previously.

 

To achieve this, the first thing is to make sure explicitly that there
is no page cached by the browser. I have used following code in header
ftl:

            <meta http-equiv="Pragma" content="no-cache">

            <meta http-equiv="Expires" content="-1">

            <meta http-equiv="Cache-Control" content="no-store,
no-cache, must-revalidate">

            <meta http-equiv="Cache-Control" content="post-check=0,
pre-check=0, false">

 

also I have tried using :

           

            UtilHttp.setResponseBrowserProxyNoCache(request,response);

in bsh files.

 

But still the first page loading in the browser is "disk cached". Next
pages are not cached. Consequently if I am clicking browser back on any
page, it is taking me back to the disk cached first page.

 

Can anybody suggest me any workaround so that not a single page is
cached and clicking on the browser back will give me

message like "This page has been expired".

 

Thanks in advance,

 

Sayoke Shome |  Technical Associate | Techmahindra Ltd. |  Gigaspace
gama 1 ,Vimannagar, Pune | India

 



============================================================================================================================

Tech Mahindra, formerly Mahindra-British Telecom.
 
Disclaimer:

This message and the information contained herein is proprietary and confidential and subject to the Tech Mahindra policy statement, you may review at <a href="http://www.techmahindra.com/Disclaimer.html">http://www.techmahindra.com/Disclaimer.html</a> externally and <a href="http://tim.techmahindra.com/Disclaimer.html">http://tim.techmahindra.com/Disclaimer.html</a> internally within Tech Mahindra.

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[David E Jones-2]

It sounds like you're running into certain pages which aren't getting  
these changes as expected, so you may want to verify that the server  
is sending these down for all of the pages you expect. It's been a  
long time since I've done this kind of stuff, but I do remember that  
you have to be careful with capitalization and that different  
browsers do tend to respond differently to these different  
directives... So, browser-specific research is generally required if  
you're running into a problem.

In general I'd highly recommend against doing this sort of thing. It  
tends to make applications very difficult and error-prone to build  
(in other words, you WILL run into nearly constant problems), and it  
really tends to annoy users, and annoy them a lot.

The better approach is to design page flows to not force the user  
down certain paths, but allow them to move around as desired and just  
make sure each page knows how to re-populate its data (for forms and  
such), and that some sort of progress bar is around and intelligent  
enough to know which pages are complete in the process, and therefore  
allow users to go to the next step.

-David


On Oct 17, 2006, at 12:33 PM, Sayoke Shome wrote:

>
> Hi all,
>
> I am developing a shopping cart for some configurable good (Say
> configurable pc). Since it is little complex configuration, my
> requirement is to make sure that if user clicks on browser back button
> instead of the back button I have provided him, page should expire.  
> And
> show "this page has expired". And when user clicks refresh on that
> expired page he is brought back on the page he was previously.
>
>
>
> To achieve this, the first thing is to make sure explicitly that there
> is no page cached by the browser. I have used following code in header
> ftl:
>
>             <meta http-equiv="Pragma" content="no-cache">
>
>             <meta http-equiv="Expires" content="-1">
>
>             <meta http-equiv="Cache-Control" content="no-store,
> no-cache, must-revalidate">
>
>             <meta http-equiv="Cache-Control" content="post-check=0,
> pre-check=0, false">
>
>
>
> also I have tried using :
>
>
>
>             UtilHttp.setResponseBrowserProxyNoCache(request,response);
>
> in bsh files.
>
>
>
> But still the first page loading in the browser is "disk cached". Next
> pages are not cached. Consequently if I am clicking browser back on  
> any
> page, it is taking me back to the disk cached first page.
>
>
>
> Can anybody suggest me any workaround so that not a single page is
> cached and clicking on the browser back will give me
>
> message like "This page has been expired".
>
>
>
> Thanks in advance,
>
>
>
> Sayoke Shome |  Technical Associate | Techmahindra Ltd. |  Gigaspace
> gama 1 ,Vimannagar, Pune | India
>
>
>
>
>
> ======================================================================
> ======================================================
>
> Tech Mahindra, formerly Mahindra-British Telecom.
>
> Disclaimer:
>
> This message and the information contained herein is proprietary  
> and confidential and subject to the Tech Mahindra policy statement,  
> you may review at <a href="http://www.techmahindra.com/ 
> Disclaimer.html">http://www.techmahindra.com/Disclaimer.html</a>  
> externally and <a href="http://tim.techmahindra.com/ 
> Disclaimer.html">http://tim.techmahindra.com/Disclaimer.html</a>  
> internally within Tech Mahindra.
>
> ======================================================================
> ======================================================