On Mon, Aug 31, 2015 at 10:45 AM, Jonathan Vanasco <[email protected]>
wrote:

> Wait... am I to read this that traversal searches down for success
> (A>B>C>D>E) and not up for failure (!E>!D>!C>!B>!A)?
>
> Are there no hooks to support caching for parent levels?
>

Pyramid's traverser is your hook. You can completely replace it. The
traverser that is there solves the 90% issues but is explicitly not written
to have further hooks. The traversal API surface [1] is incredibly tiny so
it is simple to write your own in any way you wish without worrying about
that API breaking in the future.

[1]
http://docs.pylonsproject.org/projects/pyramid/en/1.5-branch/narr/hooks.html#changing-the-traverser

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