Mark Gibson wrote:
I thought I knew how this stuff worked, but this has gotten me banging my head against a wall.
I'm trying to evaluate a condition expression, and I'm not getting what I expect when using path, and I get a different result when using python. The following expressions
results=<span tal:content="results" /><br /> dosearch=<span tal:content="request/dosearch | string:NO SEARCH" /><br /> querytpe=<span tal:content="request/querytype | string:NO QUERYTYPE" /><br />
<!-- test with python: this gives me what I expect --> <div tal:condition="python:len(results) or request.get('dosearch',None) or request.get('querytype',None)">TRUE IN PYTHON</div>
<-- This doesn't evaluate to true --> <div tal:condition="results | request/dosearch | request/querytype | nothing">THIS DOESN'T SHOW UP</div>
---- Produces: results=[] dosearch=NO SEARCH querytpe=mps TRUE IN PYTHON
As you can see, the second expression doesn't evaluate to True. Can someone explain the subtleties I seem to be missing?
Thanks, Mark _______________________________________________ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
__________ NOD32 1.1592 (20060611) Information __________
This message was checked by NOD32 antivirus system. http://www.eset.com
Mark, Just looking at your second example: <-- This doesn't evaluate to true --> <div tal:condition="results | request/dosearch | request/querytype | nothing">THIS DOESN'T SHOW UP</div> If you replace '| nothing' with '| default' you will get "THIS DOESNT SHOW UP" David