[Zope-dev] Custom dtml tag

[Brett Carter]

Andy - looking up 'this' in a dtml method or document won't work
unless you expose it in your python product/tag definition.  I'm
talking about getting 'this' inside a dtml tag that I have defined
myself (i.e. <dtml-foobar></dtml-foobar>).  If you want 'this'
available in dtml, write an external method and just return 'self'
def this(self): return self
-Brett

>>>>> "Andy" == Andy McKay <andym@activestate.com> writes:

    Andy> Really? Ive looked up this and get nothing (an attribute error actually) and
    Andy> its not in globals. If that would work that would be great - but a it
    Andy> certainly doesnt seem to on a standard DTMLDocument / Method.

    Andy> ----- Original Message -----
    Andy> From: "Brett Carter" <brett@kavi.com>
    Andy> To: "Andy McKay" <andym@activestate.com>
    Andy> Cc: <zope-dev@zope.org>
    Andy> Sent: Tuesday, September 12, 2000 4:17 PM
    Andy> Subject: Re: [Zope-dev] Custom dtml tag


    >> Andy: here's what I've gleaned - in a dtml tag's render() method, you
    >> get passed in self and a template dict, in my example let's call it
    >> 'md'.  md is essentially a stack/dictionaryish object of the *current*
    >> namespace - and one of the handy things that's always around in the
    >> namespace is the 'this' function, which returns the object on the top
    >> of the stack.
    >> 
    >> Just lookup 'this', run it, and there you have a reference to the
    >> calling object!  Ex:
    >> 
    >> def render(self, md)
    >> this = md.getitem('this')
    >> callingObj = this()
    >> return "Calling object was %s" % (callingObj.id())
    >> 
    >> Note I haven't tested this code.  Good luck!
    >> -Brett
    >>