[z3-five] Re: post-processing template result

[Paul Everitt]

Yep, I totally agree.  Times have changed since I wrote that proposal, 
and WSGI filters provide a place to work at (at least for Zope 3).  Even 
better, Sidnei wrote his weblog piece on how to get the WSGI XSLT filter 
working for Zope 3.

Still, reading through that, I realize how awful I am at grokking 
frameworks.  I honestly don't know how you guys digest stuff like WSGI 
so fast.  Guess I have some kind of framework-blindness genetic defect. :^)

--Paul

Jim Fulton wrote:
> It would be very cool to package this up as WSGI middleware.
> That would make it readily (for some definition of readily;)
> usable in Zope 3 and with other Python frameworks.
> 
> 
> Jim
> 
> Paul Everitt wrote:
>> Martin Aspeli wrote:
>>
>>> On Wed, 08 Mar 2006 15:57:54 -0000, Paul Everitt 
>>> <paul at zope-europe.org> wrote:
>>>
>>>>
>>>> FWIW, I played around with such pipelines once with Tres at last 
>>>> year's sprint before EuroPython.  We hooked the Xicken test CMS up 
>>>> to Zope 3's publishing events, passing all results through a pipeline.
>>>>
>>>> The bad news is that this event isn't available via Five and won't 
>>>> be any time soon.
>>>>
>>>> That isn't really what you're looking for, though, as you want it to 
>>>> be per-templated, not for all results on the site.
>>>>
>>>> As a different FWIW, I finally got off my butt and wrote up an 
>>>> implementation of the Zope Site Themes proposal:
>>>>
>>>>    http://codespeak.net/svn/z3/deliverance/trunk/meldX/
>>>>
>>>> The README.html hopefully explains the idea.  With a rulefile like 
>>>> this:
>>>>
>>>>    http://codespeak.net/svn/z3/deliverance/trunk/meldX/rulefile.xml
>>>
>>>
>>> This is really cool. :-)
>>
>>
>> Hey, thanks!  I think it is an idea that would make our target market 
>> thrilled in a number of ways.
>>
>>> Is this intended/possible to use in the context of Plone, i.e. to 
>>> meld/post-assemble the template that comes out of main_template (or a 
>>> custom page template)?
>>
>>
>> I didn't really want to put any barriers on where it happened.  In 
>> fact, I'm doing this theming in the browser on 2 side projects. :^)
>>
>> Mostly, it's a question of what group of folks is interested in it.  I 
>> did it first for Z3 ECM, then a Zope fishbowl proposal, then mentioned 
>> it on the CMF list.  There wasn't much interest so I stopped promoting 
>> it in those places.
>>
>> If there's interest here, fine, if not, I'll just use it on side 
>> projects and see what happens later.  (Note that Enfold used it for a 
>> Zope 3 project and was happy with the performance.)
>>
>>>> ...you can change all your pages to look like plone.org.  The other 
>>>> stuff in that deliverance directory showed this being hooked up in 
>>>> mod_python, to let Apache do dynamic theming.
>>>
>>>
>>> Does meldX work in Zope, or in Apache?
>>
>>
>> It could easily work in Zope 3 (Xicken shows this).  It could easily 
>> work in Apache.  It could somewhat-easily work in the browser.  For 
>> Zope 2, it would require a monkey patch to FSPageTemplate or something.
>>
>> This implementation presumes lxml.  That might turn some people off.  
>> A different implementation of the engine, but producing the same 
>> result useful for the same artifacts, could be done with ElementTree 
>> or even SAX.
>>
>> For me, though, lxml gave a ridiculously-tiny amount of code needed to 
>> gain what I think is a compelling win for a CMS.
>>
>> --Paul
>>
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> 
>