[Zope] testing for NULL

Trevor Toenjes zope@toenjes.com
Sun, 2 Dec 2001 01:46:54 -0500


I am messing with TinyTablePlus which has NULL as the value for one of the
ID column.
How do I test for NULL?

<dtml-in expr="testtable.getRows()">

I have tried...
<dtml-if "ID==''">
<dtml-if "ID=='Null'">
<dtml-if "ID==Null">
<dtml-if "ID==None">

I don't know if NULL is a string, a non-entity or what?
Thanks,
Trevor