[Zope] Traversable DTML methods

[Shalabh Chaturvedi]

Hi all

I just created a 'Traversable DTML Document' product. You can get it here:
http://www.zope.org/Members/shalabh/TraversableDTMLDoc/

It is a ZClass product based on the TraversableMixin (which you'll have to
install anyway) to be found here:
http://www.zope.org/Members/shalabh/TraversableMixin/

And yes, you can use the mixin to create any ZClass that is 'traversable'. For
example create a new ZClass with DTMLMethod and the TraversableMixin as bases
and you have a 'Traversable DTML Method' (that's how I created the Traversable
DTML Document).

Mail me for any problems.

Many thanks to Itamar for pointing me in the right direction, and to Ian for
initiating this mindwave.

Enjoy!

Shalabh


Ian Sparks wrote:
>
> I don't see DTML Methods as "chopping off" the URL so much as "consuming"
> parts of it. SQL Methods have this behaviour now :
>
> www.mysite.com/flavor/cherry/showme
>
> Where "flavor" is a SQL Method which takes a single parameter "cherry" and
> "showme" is a DTML Document which makes some use of the flavor SQL Method.
> In this instance "flavor" consumes the next part of the url because it is
> looking for a parameter and when it is finished hands on control to the
> next, unconsumed part of the URL "showme".
>
> Notice though that I have to have the "showme" DTML Method to actually
> display the results. If "flavor" was a parmeterized DTML Method my URL could
> become :
>
> www.mysite.com/flavor/cherry
>
> which makes more sense to me. In this case the "flavor" DTML Method would
> consume the "cherry" parameter, perhaps call some SQL Method to get the data
> for the "cherry" display and then display itself.
>
> If the parameters could have defaults then I could have URL's like :
>
> www.mysite.com/members/ian/
> www.mysite.com/members/ian/home
> www.mysite.com/members/ian/preferences
> www.mysite.com/members/ian/todo
>
> Where "members" is a DTML method which takes parameters <username>,<subsite>
> (default : "home") and decides what to display based on the parameters
> passed.
>
> This allows my "users" to become virtual (by which I mean DB-based). I can
> do the last 3 URL's now with SQL Methods ("home", "preferences" and "todo"
> become DTML documents or methods which are aquired) but I can't do the first
> URL because SQLMethods don't do any rendering for display.
>
> Well, that got rambling but it lays my argument out in full I think.
>
> - Ian.
>
>
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