>
> I considered building a custom renderer, but I can’t figure how I’d pass 
> the schema into it. 

I could also just use a vanilla decorator, but that covers up the view call 
> signature.


I do similar stuff in a variety of ways.

I almost-always augment the request object with an `add_request_method` 
that sets/stores/calculates the needed info for the active route.  On some 
routes, that data is preloaded using a decorator, on others it is looked up 
as needed by calculating info from the request's matched_route.

The second value to `render` methods of factory instances is `system` which 
should have the `request` object in it (reference the pyramid source or the 
cookbook for more info on that).  So the request, and custom method, is 
easily available within the custom renderer.

The big reason why I prefer using `add_request_method` to stash data like 
this is for ease in debugging.


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