[Twisted-web] [Nevow] inevow.IQ

[Manlio Perillo]

Jean-Paul Calderone ha scritto:
> On Tue, 25 Jul 2006 12:51:30 +0200, Manlio Perillo
> <manlio_perillo at libero.it> wrote:
>> Hi.
>>
>> In the interface IQ there is a keyed method but it seems that this is
>> not implemented.
>> What about it?
> 
> It looks like a very strange operation to me.  It should probably be
> removed from the interface.
> 

It is not the only strange thing in Nevow source code ;-).


>>
>> It is documented also in stan.py (where there are some other special
>> stuff like remember).
>>
> 
> It is?  I can't see any references to it except for on the IQ definition.
> 

nevow.stan.Tag
    def __call__(self, **kw):
        """Change attributes of this tag. This is implemented using
        __call__ because it then allows the natural syntax::

          table(width="100%", height="50%", border="1")

        Attributes may be 'invisible' tag instances (so that
        C{a(href=invisible(data="foo", render=myhrefrenderer))} works),
        strings, functions, or any other object which has a registered
        flattener.

        If the attribute is a python keyword, such as 'class', you can
        add an underscore to the name, like 'class_'.

        A few magic attributes have values other than these, as they
        are not serialized for output but rather have special purposes
        of their own:

         - data: The value is saved on the context stack and passed to
           render functions.

         - render: A function to call that may modify the tag in any
           way desired.

         - remember: Remember the value on the context stack with
           context.remember(value) for later lookup with
           context.locate()

         - pattern: Value should be a key that can later be used to
           locate this tag with context.patternGenerator() or
           context.allPatterns()

         - key: A string used to give the node a unique label.  This
           is automatically namespaced, so in
C{span(key="foo")[span(key="bar")]}
           the inner span actually has a key of 'foo.bar'.  The key is
           intended for use as e.g. an html 'id' attribute, but will
           is not automatically output.

         - macro - A function which will be called once in the lifetime
           of the template, when the template is loaded. The return
           result from this function will replace this Tag in the template.
        """

>>
>> By the way: what's the difference, say, beetwen
>> ctx.fillSlots(...) and inevow.IQ(ctx).fillSlots(...)
>> ?
> 
> Not a lot. 

An overhead for the adaptation?

> Neither should be used, though.  Use tag.fillSlots(...)
> instead.
> 

Right, thanks.
But it is strange: why I do not get deprecation warnings?



Thanks and regards  Manlio Perillo