[Zope3-Users] Blog package

[David Pratt]

Hi Stephan. Many thanks for this excellent example! :-)

Regards,
David

Stephan Richter wrote:
> On Thursday 17 August 2006 10:32, David Pratt wrote:
>> Hi Stephan. Yes, I have seen this added recently with great interest.
>>
>> :-) I'm hoping to experiment with this shortly to see how this works.
>>
>> Can you point to any code using this at the moment that I may see a
>> practical demonstration of its integration. Many thanks.
> 
> Here is the basic idea:
> 
>   <!-- Make IBlog traversing pluggable for browser access only -->
>   <view
>       for=".interfaces.IBlog"
>       type="zope.publisher.interfaces.browser.IBrowserRequest"
>       provides="zope.publisher.interfaces.browser.IBrowserPublisher"
>       factory="z3c.traverser.browser.PluggableBrowserTraverser"
>       permission="zope.Public"
>       />
> 
>   <!-- Make sure container item traversal is available for all containers -->
>   <subscriber
>       for="zope.app.container.interfaces.IReadContainer
>            zope.publisher.interfaces.browser.IBrowserRequest"
>       provides="z3c.traverser.interfaces.ITraverserPlugin"
>       factory="z3c.traverser.traverser.ContainerTraverserPlugin"
>       />
> 
>   <!-- A plugin that traverses all years -->
>   <subscriber
>       for=".interfaces.IBlog
>            zope.publisher.interfaces.browser.IBrowserRequest"
>       provides="z3c.traverser.interfaces.ITraverserPlugin"
>       factory=".blog.YearTraverser"
>       />
> 
> In Python something like that:
> 
> import zope.interface
> from zope.location import location
> from zope.publisher.interfaces import NotFound
> from z3c.traverser import interfaces
> 
> class YearTraverser(object):
>     zope.interface.implements(interfaces.ITraverserPlugin)
> 
>     def __init__(self, context, request):
>         self.context = context
>         self.request = request
> 
>     def publishTraverse(self, request, name):
>         yearNumber = int(name)
>         if yearNumber < 2000:
>             raise NotFound(name)
>         year = YearProxy()
>         location.locate(year, self.context, name)
>         return tag
> 
> Regards,
> Stephan