[Zope] Critical Question for Dieter - Testing with <dtml-in Catalog>

[Bakhtiar A Hamid]

> I need to be able to test the Catalog to see if the username is already
> indexed, and if so, raise a message that that username is already on fi=
le.
>
> I've tried :
> <dtml-in Catalog>
> <dtml-if "_['username'] =3D=3D _['sequence-item']">

a lot of stuff snipped

what's the username index in the Catalog?

let's say the index is u_name

<dtml-if "Catalog(u_name=3D{'query':_['username']})">
user exist
<dtml-else>
do your thang here
</dtml-if>

this code is untested, and i claim no responsibility for any data munged,=
 zope=20
instance sank, etc, etc

hth

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