Mohan Baro wrote:

Maybe I am asking the wrong question.
How do I get Zope to reload a page from the server when the user hits the
BACK button of the browser.

Depending on the bowser, you can't. The back button will frequently redraw what used to be there, regardless of its cachability. The only thing you really have control over is the reload button. If it is cacheable, reload might get it out of cache. If it is not, reload is guaranteed to go to the origin server (usually ;-( )

--sam

I tried
<dtml-call expr="RESPONSE.setHeader('Expires', 'Tue, 1 Jan 1980 12:00:00
GMT')">
and
<dtml-call expr="RESPONSE.setHeader('pragma', 'no-cache')">
<dtml-call expr="RESPONSE.setHeader('expires', '0')">
They are not working.
Mohan.
-----Original Message-----
From: zope-admin@zope.org [mailto:zope-admin@zope.org]On Behalf Of Shane
Hathaway
Sent: Tuesday, March 20, 2001 11:22 AM
To: zope@zope.org
Subject: Re: [Zope] Prevent cache from being loaded in Zope/DTML
Mohan Baro wrote:
>
> Hi All,
>
> How do I prevent a page from being loaded from the cache.
>
> I want the following eqiv. in zope/dtml
>      <% Response.Expires = 0 %> 'prevent cache from being loaded
<dtml-call expr="RESPONSE.setHeader('Expires', 'Tue, 1 Jan 1980 12:00:00
GMT')">
There might be a simpler syntax but I know this works everywhere. (The
header name might be "Expiration", though.)
Shane
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