On Tue, 2010-11-16 at 12:22 +0100, Wichert Akkerman wrote:
> On 2010-11-3 15:56, Wichert Akkerman wrote:
> > I spent some time today trying to figure out why my views where unable
> > to find a renderer even though it was registered. It turns out that I
> > was calling config.scan() before doing config.add_renderer(). The
> > resulting behaviour is a bit misleading: when rendering a view
> > RendererHelper.renderer() will raise a ValueError indicating that no
> > renderer factory was registered, even though a queryUtility would
> > happily return the right factory. I see two ways to improve this:
> >
> > 1. update RendererHelper.__init__() to check if the result of
> > queryUtility(IRendererFactory, name=renderer_type) is None, and if
> > so raise an exception. Something like raise ProgrammingError("Trying
> > to use a renderer %s which is not (yet) registered") would have
> > helped me track this down a lot faster.
> 
> FWIW: I was going to implemented this, but noticed that this was already 
> implemented in Pyramid in changeset 
> f5fa3f9e2a754ce199386e3f20735cd2dfbbc3fc.

Guess it just happened by-the-by, sorry.

- C


> 
> Wichert.
> 


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