[Web-SIG] Announcing bobo

[P.J. Eby]

At 02:46 AM 6/19/2009 +0300, Sergey Schetinin wrote:
>but wouldn't it be nice if we could finally just do
>things like
>
>from somebody_else.forum import ForumApp
>urlmap['/forum'] = ForumApp(db_config=...)

The Folder example in the bobo docs does basically that, actually.

I think perhaps you've misunderstood what Bobo does; it not only 
provides a framework for fixed mappings, it also provides the basis 
for doing flexible mappings.  In fact, that's what subroute parameters are for.

So you could implement your urlmap above more or less like this:

@bobo.scan_class
class UrlMap(dict):

     @bobo.subroute('/:name')
     def subitem(self, name):
         try:
             return self[name]
         except KeyError:
             ...

Although you'd probably need a __setitem__ that split on '/' and 
created sub-UrlMap instances if they don't already exist, but you get 
the idea I hope.

Bobo's basic design, IOW, allows you to make pretty much any other 
design you like, but is very simple for relatively straightforward subtrees.

Also, AFAICT, *all* bobo paths are relative paths treating the 
enclosing module or instance as a mount point, and there is nothing 
stopping you from mounting such objects at whatever locations you like.

What bobo lacks (that would be nice) is a way to figure out what URL 
to address a specified object by, since the very flexibility that 
allows objects to have more than one name, also means that there is 
no obvious way to find what name to use for an object.