Etria Lists

On Feb 19, 2008 8:41 AM, Tim Hicks <tim at sitefusion.co.uk> wrote:

>
> The approach taken in QuillsEnabled is to use ZCML to mark classes with
> IPossibleWeblog and IPossibleWeblogEntry interfaces to indicate that
> they are weblog-enable-able (to abuse language horribly).  There is then
> also an IWeblogEnhanced interface that is used to mark individual
> objects/instances (Folders, currently) to indicate that they should be
> treated as weblogs.
>
> This works fine for rendering portlets for the folder/weblog as we can
> arrange for quills' portlets to show up only when the weblog has been
> marked with IWeblogEnhanced.
>
> However, the Documents contained within the weblog/folder are only
> marked with IPossibleWeblog, but I have not figured out a good/efficient
> way of distinguishing between those IPossibleWeblog-marked instances
> that are (in some sense) currently contained in an IWeblogEnhanced
> folder, and those that are not.
>

I am curious: is the listing of entries limited to those with
IPossibleWeblog marker?

> We could register our portlets for all IPossibleWeblogEntry objects and
> then have the renderer crawl up the aq_chain looking for an object
> implementing either IWeblog directly (as in the Quills case) or
> IWeblogEnhanced (as in the QuillsEnabled case).  Somehow that feels a
> bit heavy handed, although it may not actually come with performance
> penalties as presumably zope's standard traversal mechanism will have
> 'woken up' all parent objects.
>

Here's the ten dollar question: why don't the child objects inherit
this portlet, as seems to be the default?

> Another alternative is to mark the request object with an interface
> during our custom traversal mechanism so that we know when we are
> operating "inside" a weblog.
>

If I had a kitten in my lap, it would be scared. :-P

An idea I had is that instead of rendering the portlet for content
objects with a given interface, we might simply attach the quills
portlets to a container when weblog-ifying it.  This might nullify the
ten dollar question above, but I am also concerned that it is a bit
heavy handed.

Cheers,

J

-- 
Justin Alan Ryan
Independent Interaction Architect
http://www.bitmonk.net/
* : +1-415-226-1199