[openstreetmap/openstreetmap-website] Diff upload does not allow forward references to placeholders (#1465)

Matt Amos notifications at github.com
Fri Feb 24 17:49:46 UTC 2017

> I'd really rather see this fixed in the API.

What would you do during diff upload to fix this?

Reordering elements to fix creation dependencies seems simple enough: create nodes, create ways, loop over relations creating any which have members that were already created. Doing this outside of a single create block seems like it could disrupt other dependency patterns between deletions and modifications. And solving the whole operation dependency graph seems like it would be complex, if not Hard.

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