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Wayne Volkmuth wrote:
> I have a simple test Zope product inheriting from Cacheable, PropertyManager
> and SimpleItem.
>
> Say I have a dtml method at http://myzopeinstance.com/testdtml with contents
> <dtml-let myvar="'hello world'"><dtml-var testproduct></dtml-let>
>
> I'd like "myvar" to be available in the__call__ method of testproduct. I
> don't know how to do that.
>
> Here's my testproduct __call__ method:
>
> def __call__(self, client=None, REQUEST=None, **kw):
> foo="1. client:"+str(client)+"<BR>" \
> +"2. REQUEST:"+str(REQUEST)+"<BR>" \
> +"3. kw:"+str(kw)+"<BR>" \
> +"4. getattr(..REQUEST..):"+str(getattr(self, "REQUEST",
> None))+"<BR>" \
> +"5. getattr(..client..):"+str(getattr(self, "client",
> None))+"<BR>" \
> +"6. getattr(self, myvar...):"+str(getattr(self, "myvar", None))+
> "<BR>" \
> +"7. aq_get(self, myvar...):"+str(aq_get(self, "myvar", None))+
> "<BR>"
> return foo
>
> From poking around I was expecting "myvar" to be accessible
> somewhere from that list either directly or as an attribute of one
> of the objects, but it's not. Every call (via a web browser) displays
> None for every line except #4, the getattr(self, "REQUEST", None)
statement.
Two things:
- 'myvar' is not defined as an attribute of your object: it is a name
in one layer of the DTML namespace, created by the '<dtml-let>'.
- Callables referenced by name in a var (e.g., your
'<dtml-var testproduct>') are called *without* arguments.
To get the mapping passed, you need to implement the method,
'__render_with_namespace__', which will then be passed the
multi-mapping as an argument. E.g.::
def __render_with_namespace__(self, md):
myvar = md['myvar']
# ....
Tres.
- --
===================================================================
Tres Seaver +1 540-429-0999 [EMAIL PROTECTED]
Palladion Software "Excellence by Design" http://palladion.com
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