Re: [OOTB Plone Themes discussion] Update to theming document, important news for themers

I feel the need to clarify: A theme that works on 3.0 *will* continue  
to work on 3.1.

A theme created just for 3.1 should be easier to create because you  
can customize a template by setting template= in ZCML rather than  
making a viewlet subclass.

If you want to create a theme that is compatible with both, you can  
make a subclass and do
     render = index = ViewPageTemplateFile(...)

However in that case you won't be able to override using template= in  
ZCML in Plone 3.1.x.  If you want something that's compatible with  
3.0.x and 3.1.x AND lets you customize in this way in 3.1.x, you can  
set just index and then include the following in your viewlet subclass:
def render(self):
	return self.index()

Sorry for the confusion; my intent with this change was to make things  
simpler.  I still think it does for the common case of a theme that is  
not distributed and doesn't need to be backwards-compatible with 3.0.x.

David

On Dec 9, 2008, at 5:47 PM, Alexander Limi wrote:

> We shouldn't break things in 3.x, please report this as a bug. A  
> theme that works on 3.0 should work on 3.1 (unless it's impossible  
> and has a very very good reason).
>
> On Tue, Dec 9, 2008 at 5:02 PM, Veda Williams <veda-PRw/[email protected]> wrote:
> Hi All,
>
> After some poking around in a theme today, I realized that something  
> had
> changed in the 1.1.3 version of the plone.app.layout egg. The upshot  
> of this
> change meant that any new themes being developed with this newer egg  
> would
> break when installed on an older 3.x version of Plone.
>
> I've added a section called "3.1 Theme Compatibility Between  
> Different 3.x
> Versions of Plone" to this document to try to ensure best practices  
> moving
> forward:
>
> http://plone.org/documentation/tutorial/customizing-main-template-viewlets/o
> verriding-a-class-viewlet
>
> While this is a documentation update, it's also important for  
> themers to
> understand that something has changed under the covers. And, for the  
> OOTB
> project in particular, themers should strive for backwards  
> compatibility.
>
> If my notes here are unclear, please let me know.
>
> Thanks!
>
> - Veda
>
>
> -------------------
> Veda Williams, ONE/Northwest
> Web Developer / Skinner
>
>
>
>
>
> --
> Archive: http://www.openplans.org/projects/ootb-plone-themes/lists/ootb-plone-themes-discussion/archive/2008/12/1228870935366
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>
>
>
>
> -- 
> Alexander Limi · http://limi.net
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David Glick
Web Developer
ONE/Northwest

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