----- Mensaje original ----- De: Phil Mayers p.mayers@imperial.ac.uk Fecha: Martes, Julio 5, 2011 4:01 am Asunto: Re: [Twisted-web] Deferred 101

On 07/05/2011 05:14 AM, mayvimmer@fibertel.com.ar wrote:

...

Hi guys, I'm totally new to Twisted although everything I try so far has been a lot of fun. I have a really simple situation it seems I cannot wrap my head around. Although the tutorial have been really helpful I cannof find how to fix this last part.

The problem is almost certainly that Mako is not deferred-aware. If it were, it would stop the render when encountering a deferred and re- start when the deferred callback runs. But if it were, the return value of it's render method would almost certainly itself be a deferred, which of course it's not.

Try something this:

def render_POST(self, request): d = myDeferredMethod() def render(value): request.write(template.render(...., value=value)) request.finish() d.addCallback(render) return NOT_DONE_YET

i.e. add a callback to the deferred which does the rendering for you only when the result is available.

FWIF the recently added twisted.web.template handles deferred natively.

Thanks a lot Phil. That fixed my problem.

Eduardo Miguez