[Zope] - Testing for query variable existance in dhtml

[Brad Clements]

I have a document that is called with or without a query value.

http://myhost/mydocument?list=thislist

or

http://myhost/mydocument

What's the best way to determine if list is defined in the request? I tried

<!--#if REQUEST.has_key(list)-->

That didn't work, either with or without quotes

Also, whats the correct way to determine if list points to a valid object, I 
tried this.

<!--#with REQUEST-->
<!--#if _.has_key(list)-->
<!--#var _.getitem(list,1)-->

This seems to work if list is pointing to a valid object, but I get "Sorry, 
Zope is offline" error if list is an invalid object name.

What I really want to know is if list names something IN the current 
Folder that contains the current document..

Any suggestions?

Could I use

<!--#if _.has_key(PARENT[0].[list])-->

??

Thanks



Brad Clements,                bkc@murkworks.com   (315)268-1000
http://www.murkworks.com                          (315)268-9812 Fax
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