[Zope-DB] Testing for empty result set

Dieter Maurer dieter at handshake.de
Thu Mar 24 14:45:10 EST 2005

Charlie Clark wrote at 2005-3-24 13:44 +0100:
> ...
>your right tal:condition is what you should be using. However, as 
>Results-Objects with empty records are not None you still need a little 
>Python test to get things to work correctly.
><div tal:condition="python: len(context.myZSQL())">

While an empty result set is not "None", it behaves as a
Python "false" value.

Therefore, you can (and should) use



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