reactive mongo that can be used with angular resources. make sure to perform validation before inserts and updates. there are 2 json readers, this is used to transform mongo object to and from the front end (FE). Then 2 sample api calls to use them, there is an assumption that id or _id will always be there, otherwise its a runtime exception.

gistfile1.scala

val mongoToFE = 
	__.json.update((__ \ 'id).json.copyFrom( (__ \ '_id \ '$oid).json.pick )) andThen
	(__ \ '_id).json.prune

val FEtoMongo =
	__.json.update((__ \ '_id \ '$oid).json.copyFrom( (__ \ 'id).json.pick )) andThen
	(__ \ 'id).json.prune

Async {
	val items = collection.find(BSONDocument("_id" -> objectId)).cursor[JsObject]
	items.headOption.map { 
		case None => NotFound
		case item => Ok(item.get.transform(mongoToFE).get)
	}
}

Async {
	collection.update(BSONDocument("_id" -> objectId), json.transform(FEtoMongo).get).map { _ =>
		NoContent
	}
}