[Zope] depthfinder

[Oleg Broytmann]

On Mon, 22 Nov 1999, Ethan Fremen wrote:
> why doesn't this work?  It fails if PARENTS[1] evaluates to false.
> 
> <dtml-if "PARENTS[1]"><a href="<dtml-var
> "PARENTS[1].absolute_url()">">back</a></dtml-if>
> 
> last lines of traceback:
> 
>   IndexError: list index out of range

   The error message said it all - list index out of range. Read: there is
no PARENTS[1], only PARENTS[0].
   Test "_.len(PARENTS) > 1"...

Oleg.
---- 
    Oleg Broytmann      Foundation for Effective Policies      phd@phd.russ.ru
           Programmers don't die, they just GOSUB without RETURN.