AW: [Zope3-dev] Re: AW: Pagelets and UI (was: IsarSprint topics -Zope 3application components)

[dev at projekt01.ch]

Joe Geldart wrote:
> Betreff: [Zope3-dev] Re: AW: Pagelets and UI (was: IsarSprint 
> topics -Zope 3application components)
> 
> 
> On Mon, 13 Sep 2004 12:02:30 +0200, dev wrote:
> > 
> > This portlets can be placed in a instance (annotation)
> > like a marker (object). This marker (object) has additional 
> > information for the view (page template).
> >
> 
> I won't interleve my explanation with your comments (its a
> little awkward :)
> 
> Pagelets are subscribers on an object interface, a view
> interface and a
> region interface. Valid pagelets (meeting conditions and 
> permissions) from
> a region are obtained and injected into some boilerplate structural
> markup. The pagelets are already ordered by their weight. This system
> allows pagelets to include regions, and for structural 
> decisions (such as
> which regions are in columns) to be made in the templates.
> 
> In our terminology (which we developed in Plone) a portlet is a small 
> chunk of secondary content (not necessarily in one of the two columns 
> that typically grace sites) and a pagelet is a small chunk of a
> page. This does
> seem to indicate that portlets are a subtype of pagelets but 
> for various
> usage reasons its generally beneficial to regard them as separate and
> simply include portlets using a pagelet.
> 
> Currently pagelets are separate to widgets (for
> implementation reasons)
> but it is in our plan to gradually merge them into a single unified
> system. This would mean that all components of a page can be 
> modularised
> using the same paradigm. This is of course desirable, but depends on
> turning views into multi-adapters (as per Jim's proposal). So 
> its in the
> roadmap, but isn't essential to us now. We would appreciate some help
> achieving this however.
> 
> To render two different instances of a folder differently,
> you just apply
> condition attributes to the pagelet directives. A condition 
> is any TALES
> expression, so you can do quite complex things (such as conditioning a
> pagelet's appearance depending on the traversal path or some object
> property)

Sounds good, to me. But I think I have to see it in action.
I'm not shure how much work it is for to get a running
homepage with this pagelet system.

> Netalley Networks LLP are hoping to send Michael Zeltner to attend 
> IsarSprint. He'd be happy to collaborate with you in increasing the 
> power of the pagelet concept and moving your portlet system to be
> rendered as a
> (set of) pagelet(s).

Ok, whould be great to meet Michael there. I'm shure we can
workout some examples for to show what exactly a pagelet system is.

> We're also very keen on merging the concepts of pagelets and form/view 
> generation from a schema. If you could help with that, it would be 
> very much appreciated. I am currently (and usually) on #zope3-dev
> and #z3-base
> on Freenode if you wish to chat. My nickname is Arnia.

I'm working actually on a big Zope3 customer project, but I try to 
hang a litle bit more in the IRC channels.

Regards 
Roger

> Regards,
> --
> Joe Geldart, Senior Partner
> Netalley Networks LLP
> http://www.netalleynetworks.com
> 
> _______________________________________________
> Zope3-dev mailing list
> Zope3-dev at zope.org
> Unsub:
http://mail.zope.org/mailman/options/zope3-dev/dev%40projekt01.ch