class Transaction(APIView):
    """
    List all snippets, or create a new snippet.
    """
    def post(self, request, format=None):
        serializer = TransactionSerializer(data=request.data)
        if serializer.is_valid():
            return Response(serializer.data, status=status.HTTP_201_CREATED)
        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)


class TransactionSerializer(serializers.Serializer):
    # asset = serializers.IntegerField()
    asset = serializers.PrimaryKeyRelatedField(read_only=True)
    amount = serializers.FloatField()