[Zope3-Users] How to register multiple view for the same content class

[Frank Burkhardt]

Hi,

On Fri, Sep 28, 2007 at 05:33:56PM +0800, Yuan HOng wrote:
> On 9/28/07, Frank Burkhardt <fbo2 at gmx.net> wrote:
> 
> >
> > You just need another browser:page here. Name it 'in-shelf-view' and
> > use something like
> >
> >  <div tal:replace="structure book/@@in-shelf-view" />
> >
> > to embed it.
> >
> 
> Thanks, that works. So all was missing is the '@@' notation to tell
> TALES to look up a view for Book.
> 
> > Registering the view for different "shelves" is possible, too. But this not
> > a simple view anymore - it's a "Multiview". You need an adapter for
> > (book,shelve,request) to do that which means, a simple browser:page won't
> > work and you'll be not able to use the object/@@view notation for that.
> >
> 
> If not object/@@view, what then? A custom traverse to lookup the
> Multiview maybe?

You could use a view as dispatcher which then would be traversed like object/@@view:

class MyDispatcher(object):
   def __call__(self):
      realview=zapi.getMultiAdapter((self.context,self.context.__parent__,self.request))
      return realview()

class MyExampleView(object):
   def __init__(context,parent,request):
      self.context=context
      self.parent=parent
      self.request=request
   
   def __call__(self):
      return "Book/shelf-specific html"

*configure.zcml*
<configure>
   <browser:page for=".interfaces.IMyBook" name="view" class="MyDispatcher" ... />
   <zope:adapter for=".interfaces.IMyBook .interfaces.IMyShelf IBrowserRequest" ... />
</configure>

Regards,

Frank