Nested Routes

[Mengu]

hi everyone,

i have a conceptual question on routes. in rails we would have routes
and nested routes. for example a document has many pages and i could
set up routes like "/documents/:id/pages", "/documents/:id/pages/[new|
create|edit|update|destroy]. is this possible with turbogears?

[Michael Pedersen]

Well, the preferred mechanism in TG is to use Object Dispatch. So, it functions differently. Despite it working differently, yes, it is possible.

Your controller has two methods to assist with this:

_default(): This will be called whenever the index method would be called, but there is no index method.

_lookup(): This will be called when your controller is responsible for handling the URL, but no match could be found.

So, for examples (we assume a root controller that *only* has _default and _lookup defined, for sake of simplified examples):

URL: http://example.com/

method: _default

URL: http://example.com/documents/idnum/pages

method: _lookup

The pattern can be nested deeply, as well, allowing you to have a controller mounted at documents, which would then _lookup the idnum and act appropriately. It could even dispatch the control down to a further nested subcontroller for more localized processing.

--
Michael J. Pedersen

My Online Resume: http://www.icelus.org/ -- Google+ http://plus.ly/pedersen

Google Talk: m.ped...@icelus.org -- Twitter: pedersentg

[Mengu]

hi michael,

thank you very much for your answer. after reading your post, i did
dive into the source files under tg/controllers and the documents.
your post and the http://www.turbogears.org/2.1/docs/main/TGControllers.html
page was very helpful.

for future references if anyone needs, here is how i am using nested
routes with TG 2.1.4 -as it's the current version right now-:

this is an exempt of my DocumentsController class:
http://pastie.org/private/1vdjcqo2lbdj6p3zja7a

and this is my PageController class: http://pastie.org/private/wleeeoph90geuly2bdh1g

thanks again.

On 26 Aralık, 17:51, Michael Pedersen <m.peder...@icelus.org> wrote:

> Google Talk: m.peder...@icelus.org -- Twitter: pedersentg

[Moritz Schlarb]

Hey Mengu, thanks for your examples,

I just ran into the same problem as you and your solutions really helped me out!

Best wishes,

Moritz

PS: Michael, I think it would be very nice to have this example somewhere in the TG docs, wouldn't it?

[Alessandro Molina]

The 20 Minutes Wiki tutorial is a good example about using _default
(http://www.turbogears.org/2.1/docs/main/Wiki20/wiki20.html) but we
indeed miss an example for _lookup.

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