[Zope] Sorting a dictionary in ZPT

[Dieter Maurer]

Richard Wesley wrote at 2003-2-11 09:54 -0800:
 > I have a list of dictionaries extracted from a database by a python 
 > script.  I would like to sort them for display in a ZPT.  When I try 
 > to say something like
 > 
 > tal:define="raw python:here.rawScript();
 > cooked python:sequence.sort(raw,(('title','nocase','asc'),));"
 > 
 > I get the rather annoying error message:
 > 
 > Error Type: TALESError
 > Error ValueL exceptions.AttributeError on 'None' object has no 
 > attribute 'lower' in <PythonExpr 
 > sequence.sort(raw,(('title','nocase','asc'),))>, at line...

"sort" expects that the "column names" in your sort specification
can be interpreted as attributes.

When you want to sort a sequence of dictionaries, your must
pass "mapping=1" to "sort".


Dieter