[Zope] How do reset a dtml-var

[Chris Gray]

A caveat about the REQUEST.set method:

There is a memory leak associated with this technique.  Use it as
sparingly as possible.

(This points to another reason for the dtml-let end tag -- garbage
collection.)

Before I found out about this, I used REQUEST.set quite freely with the
result that I now restart the Zope server automatically at regular
intervals to prevent the gradually swelling process from bogging down.

Chris

On Mon, 3 Jun 2002, McDonnell, Larry wrote:

> Hi,
>  
> Thanks for the quick responses, Scott this works great thanks again.
> 
> -----Original Message-----
> From: Meilicke, Scott [mailto:scott.meilicke@intp.com]
> Sent: Monday, June 03, 2002 1:11 PM
> To: McDonnell, Larry; 'Zope@Zope. Org' (E-mail)
> Subject: RE: [Zope] How do reset a dtml-var
> 
> 
> 
> variables set by dtml-let are only in the namespace in between the dtml-let
> tags.  When you close the tag, the variables are removed.  If you can't use
> dtml-let tags, you can push the variable into REQUEST with:
> 
> (not tested) 
> 
> <dtml-call "REQUEST.set('revision','%')"> 
> 
> -Scott 
> 
> -----Original Message----- 
> From: McDonnell, Larry [ mailto:lmcdonnell@protonenergy.com
> <mailto:lmcdonnell@protonenergy.com> ] 
> Sent: Monday, June 03, 2002 9:57 AM 
> To: 'Zope@Zope. Org' (E-mail) 
> Subject: [Zope] How do reset a dtml-var 
> 
> 
> Hi, 
> 
> I am trying to check to see if the dtml-var revision is set to a null and if
> 
> it is I want to set it to "%" as a sql wildcard. This is my test. 
> 
> <dtml-if expr="revision==''"> 
> <p><dtml-var revision>test if1</p> 
> <dtml-let revision="'%'"> 
> <p><dtml-var revision>test if2</p> 
> </dtml-let> 
> <p><dtml-var revision>test if3</p> 
> </dtml-if> 
> 
> Here are my results. 
> test if1 
> %test if2 
> test if3 
> 
> How come the variable is not set after I leave dtml-let statement? Thanks. 
> 
> Larry McDonnell 
> 
> Proton Energy Systems 
> 50 Inwood Rd. 
> Rocky Hill, CT 06067 
> (860) 571-6533 ext. 531 
> Email:lmcdonnell@protonenergy.com 
> www.protonenergy.com 
> 
> 
> 
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