[Zope] using ZPT to invoke an External Method and pass in var

[Tim Lynch]

That did it!

Thanks Chris


>Try:
>    <span tal:define="stateNumber python:33">
>      The <span tal:replace="python:here.getStateName(stateNumber)" />
>    </span>
>
>And then comment the zopelab recipe.
>
>>-----Original Message-----
>>From: Tim Lynch [mailto:lynch@gould.mannlib.cornell.edu]
>>Sent: Friday, 4 October 2002 3:07 p.m.
>>To: zope@zope.org
>>Subject: [Zope] using ZPT to invoke an External Method and pass in
>>variables
>>
>>
>>
>>I've been trying to get a page template to call an external method, passing
>>some
>>variables in the call.   I've been trying to follow an example I found on
>>ZopeLabs:
>>(http://www.zopelabs.com/cookbook/1008969252):
>>
>>
>>    Submitted by: runyaga
>>    Last Edited: 2002-02-18 
>>    Category: Python(External Method)
>>    
>>    ---------------------------------------------------------------------
>>    Description:
>>    if you want to use any python libraries, or xmlrpclib you can do this 
>>    from python external methods. this is very simple.
>>    ---------------------------------------------------------------------
>>    
>>    Source (Text): 
>>    #inside $ZOPE/Extensions
>>    #create a file, xmlrpc_example.py
>>    from xmlrpclib import Server
>>    
>>    
>>    def getStateNameByNumber(number=1):
>>        """ python lib example """
>>        # simple test program (from the XML-RPC specification)
>>        # server = Server("http://localhost:8000") # local server
>>        server = Server("http://betty.userland.com")
>>        try:
>>            return server.examples.getStateName(number)
>>        except Error, v:
>>            raise v
>>    
>>    #inside ZOPE create a External Method:
>>    #id: getStateName
>>    #module: xmlrpc_example
>>    #function: getStateNameByNumber
>>    
>>    #then you can test that or call it from a Pagetemplate:
>>    <span tal:define="stateNumber python:33">
>>      The #<span tal:replace="stateNumber"/> is 
>>           <span tal:replace="python:getStateName(stateNumber)" />
>>    </span>
>> 
>>
>>When I follow this as given, I get:
>>
>>Error Type: NameError
>>Error Value: global name 'getStateName' is not defined
>>
>>
>>
>>If I revise the ext. method call to:
>>            <span tal:replace="here/getStateName" />
>>
>>the call succeeds (using the default value) but I can't figure
>>out how to pass in a value.  Anything I try that has a variable
>>in parentheses following the function name fails.
>>
>>The external method is OK as I've tested it outside of zope.
>>(actually, the ext. method is not actually making an xml-rpc call
>>at all -- I'm just returning whatever number is passed in as a sring)
>>
>>I've pored over the mail list archives, checked zopelabs for other
>>examples, to no avail.
>>
>>
>>I'm running Zope 2.60b1 if that makes any difference.
>>
>>
>>- Tim Lynch
>>  tlynch@nal.usda.gov