More robust Json reads about scala-redox HOT 2 CLOSED

A few issues:

1. traversableReads will provide the default Nil if any element in the subtree has errors.
   You could instead, ignore the errors and salvage as many elements of the array as possible.
   That would mean always returning JsSuccess, and simply not adding anything to the accumulator on failure.
   https://github.com/playframework/play-json/blob/master/play-json/shared/src/main/scala/play/api/libs/json/Reads.scala#L168

2. nullableWithDefault only provides the default value if nothing is found, not on error.
   You could instead ignore the errors and apply the default. That would turn objects populated entirely with null to be discarded.
   https://github.com/playframework/play-json/blob/master/play-json/shared/src/main/scala/play/api/libs/json/JsConstraints.scala#L64

3. Preprocess out all objects entirely made of null (Redox does this frequently) and recursively replace the subtree root with null instead.

from scala-redox.

Resolved via option 3

from scala-redox.