jfinkels/flask-restless — pull request #324 by glyphobet (2014-06-14 08:57:41+00:00)
Title: fixes to DELETE method handling

Idempotency only means that subsequent identical requests cannot have
additional side-effects. Since the response code is not a side effect,
but rather a return value, `DELETE` should respond with `204` only if
an object is deleted, and with `404` when nothing is deleted.

(It is very confusing if an API returns `204` to a DELETE for a nonexistent
or inaccessible resource.)