Humberto Diógenes wrote:
> Thanks, Alberto. But as I said, I'm trying to port an old application
> -- that means I would have to add one request.GET line for every
> parameter in every controller function (and then remove all parameters
> from the function signature).
>
> I could do that, but what I'd really like to know is this: does Pylons
> support query string "parameter injection"? If not, how difficult
> would it be to implement that?
This past weekend, I participated in a sprint on Pylons where
we implemented two new controllers: DecoratedController and
ObjectDispatchController. Both of these controllers perform "parameter
injection." Here is an example of a DecoratedController:
from pylons.controllers import DecoratedController
from pylons.decorators import expose
class TestController(DecoratedController):
@expose()
def testing(self, name):
return 'Hello, %s' % name
Navigating your browser to '/test/testing?name=Humberto' will render the
string "Hello, Humberto." You can also render templates from Buffet
compatible engines by passing specific information into the expose
decorator, like so:
@expose('myproject.templates.testing')
def testing(self, name):
return dict(name=name)
The dictionary you return in the controller method will be used as the
namespace for your template. You can also render JSON by simply doing
@expose('json'). The expose decorator can be stacked:
@expose('json', content_type='application/json')
@expose('myproject.templates.testing', content_type='text/html')
def testing(self, name):
return dict(name=name)
You then send the `Accept:` header to perform content negotiation to
determine which output will be rendered.
This is all very new, so it probably has some bugs, but please do give
it a try, and we'll do our best to fix any bugs you find!
--
Jonathan LaCour
http://cleverdevil.org
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