example use Django Rest Framework

teste.py

# serializers.py
class ObjectiveSerializer(serializers.ModelSerializer):

    class Meta:
        model = Objective
        fields = (
            'name', 'short_description', 'points_awarded',
            'number_of_steps', 'energy_cost'
        )


# views.py
class ObjectiveListAPI(generics.ListAPIView):
    queryset = Objective.objects.all()
    serializer_class = ObjectiveSerializer