[Zope] Tal:condition problem

[zope]

Hi  Jens

I have tried the method you have suggested but I think the first time the
page is loaded one value for the variable "id" is being expected .
So I am getting an error like this:
  The XML page cannot be displayed
  Cannot view XML input using XSL style sheet. Please correct the error and
then click the button, or try again later.


----------------------------------------------------------------------------
--

  A name contained an invalid character. Error processing resource
'http://192.168.10.11:8080/oms/Users/pl'. Line 3, Position 56



 exceptions.KeyError on id in "<PythonExpr request.form['id'] == 't' or
nothing>"
-------------------------------------------------------^
Could you tell me how I can rewrite this so that the first time the page is
loaded even if there is no value for "id" the page will be shown .
And only if I pass a form variable it should execute.

Thanks and Best Regards
John Kunchandy
----- Original Message -----
From: "Jens Vagelpohl"
To: "zope" Cc: Sent: Tuesday, August 20, 2002 5:26 PM
Subject: Re: [Zope] Tal:condition problem


> i would *not* put both the tal:condition and metal:use-macro statements on
> a single tag. separate them so each is on its own tag::
>
> <div tal:condition="python:request.form['id'] == 't' or nothing">
>    <metal:block
use-macro="container/zptmac_memtask/macros/zptmac_taskslist"
>  >
>      List
>    </metal:block>
> </div>
>
>
> jens
>
>
> On Tuesday, August 20, 2002, at 07:18 , zope wrote:
>
> > Hi All
> > I am trying to execute a macro only if a condition is satisified.
> > The code I am using is:
> >
> > <div tal:condition="python:request.form['id'] == 't' | nothing"
> > metal:use-macro="container/zptmac_memtask/macros/zptmac_taskslist">
> > List
> > </div>
> > <div tal:condition="python:request.form['id'] == 'p' | nothing"
> > metal:use-macro="container/zptmac_mempending/macros/zptmac_pendlist">
> > List
> > </div>
> > <div tal:condition="python:request.form['id'] == 'w' | nothing"
> > metal:use-macro="container/zptmac_memweek/macros/zptmac_weeklist">
> > List
> > </div>
> > <div tal:condition="python:request.form['id'] == 'a' | nothing"
> > metal:use-macro="container/zptmac_memall/macros/zptmac_alllist">
> > List
> > </div>
> > Depending on which value is passed with the form object i want that a
> > particular macro be called.
> > But as soon as this page is rendered it shows me all the macros
> > irrespective of whether I am sending any value for "id".
> > Is there some way I can check the condition and only show the required
> > macro.
> > I m sure someone working on this particular area dealing with different
> > conditions can help me out.
> >
 Best Regards
John Kunchandy




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