Web Page Refresh

zeuss · 27th September 2002, 8:41 AM

I've got a feeling that what I'm about to ask is really easy, but I've got no idea how to fix this problem...

I'm setting up a web site for uni, with HTML, PHP, cgi (perl) and JavaScript code. The server is Apache, running on a Solaris machine. The web site features a web-based email client, which displays messages stored on the server. Each user has an 'Inbox', which lets them view a list of message headers that they can click through to see an entire message.

The problem is that certain browsers are caching the 'Inbox' page. Therefore if the user deletes a message and returns to the list, the page is not updated. So I think I'm looking for a way to set a specific page (inbox.html) as 'un-cachable', or to make the browser realise that the page is dynamic and should be checked for changes.

Any ideas or suggestions would be great.
Thanks,
ZeUSS.

mpot · 27th September 2002, 10:19 AM

You need to add some headers to tell the web server / browser not to cache the page.

Try this page.

Cheers,
Martin.

Bern · 27th September 2002, 10:25 AM

You can use a meta refresh to reload the page, however this will keep refreshing over and over, a better soultion would be to use some javascript, a quick google should provide a few hints.

DRILL SGT · 27th September 2002, 11:25 PM

Umm, you could create a frame for the inbox.html, then

Code:

src for control.htm
assumed you have all the html structure etc
<script language="javascript">
function sniper(){
parent.frames[1].location.reload() //this is a "hard" reload doesn't go throught the history, softload is history.go(0)
}
</script>
<body onload="sniper()">

That will hardreload the page when ever it is loaded, hope it helps

cogo · 28th September 2002, 8:53 AM

we had a similar problem with a HR app we built. we solved it by putting a date stamp on the end of a page request;

page.asp?Refresh=9/28/02+8:45:26+AM

that way you trick the browser to think that the page is unique.

zeuss · 3rd October 2002, 11:57 AM

I ended up putting links everywhere to a different page, which sends the user to a refreshed version of the page, ie if i want the user to go back to 'index.php', i send them to 'inboxUpdate.html', which has the following code:

Code:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>Inbox Update Redirect</title>
    <meta http-equiv="refresh" content="0; url=inbox.php">
  </head>
</html>

Thanks for your help guys

27th September 2002, 8:41 AM	#1
zeuss Member Join Date: Jul 2001 Location: Hawthorn East, Melbourne Posts: 276	Web Page Refresh I've got a feeling that what I'm about to ask is really easy, but I've got no idea how to fix this problem... I'm setting up a web site for uni, with HTML, PHP, cgi (perl) and JavaScript code. The server is Apache, running on a Solaris machine. The web site features a web-based email client, which displays messages stored on the server. Each user has an 'Inbox', which lets them view a list of message headers that they can click through to see an entire message. The problem is that certain browsers are caching the 'Inbox' page. Therefore if the user deletes a message and returns to the list, the page is not updated. So I think I'm looking for a way to set a specific page (inbox.html) as 'un-cachable', or to make the browser realise that the page is dynamic and should be checked for changes. Any ideas or suggestions would be great. Thanks, ZeUSS. __________________ Never trust a programmer who carries a screwdriver. ZeUSS - PCDB Entry [Lian Li PC-60USB \| Asus A7N8X 2.0 \| AthlonXP 2800@2250MHz \| 1Gb PC3200 Dual-DDR RAM \| Leadtek 64Mb GeForce4 4200 (core@315 mem@580)]

27th September 2002, 10:19 AM	#2
mpot <blank> Join Date: Jun 2001 Location: Perth, WA Posts: 5,345	You need to add some headers to tell the web server / browser not to cache the page. Try this page. Cheers, Martin. __________________ [ photography blog \| redbubble \| flickr ]

27th September 2002, 10:25 AM	#3
Bern Off the rails Join Date: Jun 2001 Location: Brighton, QLD Posts: 5,000	You can use a meta refresh to reload the page, however this will keep refreshing over and over, a better soultion would be to use some javascript, a quick google should provide a few hints. __________________ \| Free Beer \| p-two.net \| OCAU Forum Rules \| \| news \| stff \| stfw \| wiki \| \|

3rd October 2002, 11:57 AM	#6
zeuss Member Join Date: Jul 2001 Location: Hawthorn East, Melbourne Posts: 276	I ended up putting links everywhere to a different page, which sends the user to a refreshed version of the page, ie if i want the user to go back to 'index.php', i send them to 'inboxUpdate.html', which has the following code: Code: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>Inbox Update Redirect</title> <meta http-equiv="refresh" content="0; url=inbox.php"> </head> </html> Thanks for your help guys __________________ Never trust a programmer who carries a screwdriver. ZeUSS - PCDB Entry [Lian Li PC-60USB \| Asus A7N8X 2.0 \| AthlonXP 2800@2250MHz \| 1Gb PC3200 Dual-DDR RAM \| Leadtek 64Mb GeForce4 4200 (core@315 mem@580)]

28th September 2002, 8:53 AM	#5
cogo Member Join Date: Jan 2002 Location: mel-burn Posts: 255	we had a similar problem with a HR app we built. we solved it by putting a date stamp on the end of a page request; page.asp?Refresh=9/28/02+8:45:26+AM that way you trick the browser to think that the page is unique.