There is also a modifier to RESPONSE.redirect named "lock" that locks the status code to 302 and disallows any errors to change the status code. This is also a reasonable way of avoiding this problem. RESPONSE.redirect('some/page', lock=1) On Wed, 2002-06-05 at 10:55, hans wrote:
Chris McDonough wrote:
When you do a RESPONSE.redirect, the rest of the page is still rendered, and it's not until the response is sent back to the browser that the redirect happens.
The "missing" modifier to dtml var is useful here:
<dtml-var var1 missing>
----- Original Message ----- From: "Michael Fox" <Michael@Wodin.CenturySoftware.com.au> To: <zope@zope.org> Sent: Tuesday, June 04, 2002 8:57 PM Subject: [Zope] Handling Session Timeouts
Hi *,
In an attempt to handle session timeouts, I'm wondering if someone on this list can enlighten me.
My application utilises Zope's Transient Object Container & Session Data Manager.
Once a user is authenticated, I set several variables in my Session Data Manager with the values from a HTML form -
<dtml-call "REQUEST.SESSION.set('var1', var1 )"> <dtml-call "REQUEST.SESSION.set('var2', var2 )"> <dtml-call "REQUEST.SESSION.set('var3', var3 )">
Now these are variables are in my SDM, I set these in my standard_html_header as such...
<dtml-call "REQUEST.set('var1',REQUEST.SESSION['var1'])"> <dtml-call "REQUEST.set('var2',REQUEST.SESSION['var2'])"> <dtml-call "REQUEST.set('var3',REQUEST.SESSION['var3'])">
This way I can access any session variables via <dtml-var var1> rather than <dtml-var "REQUEST.SESSION['var1']">
Am I on the right track so far?
My problem is handling timeouts. My Trasient Object Container has a timeout value of 20 mins.
In my attempt to handle timeouts, I have the following code in my standard_html_header -
<dtml-if "REQUEST.SESSION.has_key('var1')"> the session still has this key, therefore must be active, do nothing. <dtml-else> <dtml-call "RESPONSE.redirect('login_page')"> </dtml-if>
http://www.zope.org/Members/datagrok/WatchThatRedirection or put <dtml-return> after redirect
* The rest of my HTML code goes here.
The problem is the redirect isn't working and Zope attempts to render the page... thus resulting in a Zope error.
Does anyone have a working solution to this? or could point me in the direction of some Docs/HOW-TO's?
Any help appreciated.
Regards, Michael