[Twisted-web] Freeform/formless doesn't work with deferred properties?

[Christopher Armstrong]

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Gavrie Philipson wrote:
> PS: A similar thing happens when returning a deferred as an attribute of 
> context.tag in a render method.

I don't know what to do about your freeform/deferred problem, but this 
one's easy to handle: don't return tags that have Deferreds inside, do this:

def render_foo(self, ctx, data):
     d = getYourDeferred()
     d.addCallback(self._cbGenTags, ctx)
     return d

def _cbGenTags(self, result, ctx):
     return ctx.tag[ str(result) ]


-- 
  Twisted | Christopher Armstrong: International Man of Twistery
   Radix  |          Release Manager,  Twisted Project
---------+           http://radix.twistedmatrix.com/

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