There is a way to limit nested objects from HyperlinkedRelatedField ?

[MkLHX]

Hi, i'm looking for answer about limiting nested objects return from HyperlinkedRelatedField.

I don't speak about django pagination for a View or DRF pagination for Viewset.
My Models:

class Pump(models.Model):
    def __unicode__(self):
        if self.objects.count() > 5:
            raise Exception("cannot insert more than 5 pumps for one waterpump")

    water_pump = models.ForeignKey(
        WaterPump, on_delete=models.CASCADE, related_name="pumps"
    )

    def __str__(self):
        return "pump-%s-%s" % (self.id, self.water_pump.unique_id)

    class Meta:
        pass


class PumpSetting(models.Model):
    pump_type = models.IntegerField(default=0)
    pump_duration = models.IntegerField(default=0)
    pump_state = models.BooleanField(default=False)
    at = models.DateTimeField(auto_now_add=True, blank=True)
    pump = models.ForeignKey(
        Pump, on_delete=models.CASCADE, related_name="pump_settings"
    )

    class Meta:
        pass

My ViewSets:

class PumpViewSet(MyReadOnlyViewset):
    """@brief
    API endpoint that allows hub's slaves waterpumps pumps to be viewed or edited.
    """

    queryset = core_models.Pump.objects.all().order_by("id")
    serializer_class = serializers.PumpSerializer
    filter_backends = [DjangoFilterBackend]
    filterset_fields = [
        "id",
        "water_pump",
        "water_pump__unique_id",
    ]
    pagination_class = LimitOffsetPagination
    permission_classes = [permissions.AllowAny]
    
class PumpSettingViewSet(MyReadOnlyViewset):
    """@brief
    API endpoint that allows hub's slaves waterpumps pump settings to be viewed or edited.
    """

    throttle_classes = [UserRateThrottle]
    queryset = core_models.PumpSetting.objects.all().order_by("-id")

    serializer_class = serializers.PumpSettingSerializer
    filter_backends = [DjangoFilterBackend]
    filterset_fields = [
        "id",
        "pump_type",
        "pump_state",
        "at",
        "pump",
    ]
    pagination_class = LimitOffsetPagination
    permission_classes = [permissions.AllowAny]

My Serializers:

class PumpSerializer(serializers.HyperlinkedModelSerializer):
    pump_settings = serializers.HyperlinkedRelatedField(
        view_name="pumpsetting-detail", many=True, read_only=True
    )
    class Meta:
        model = core_models.Pump
        fields = [
            "id",
            "resource_uri",
            "pump_settings",
            "water_pump",
        ]
        depth = 1
        read_only_fields = [
            "id",
            "pump_settings",
            "water_pump",
        ]

class PumpSettingSerializer(serializers.HyperlinkedModelSerializer):
    class Meta:
        model = core_models.PumpSetting
        fields = [
            "id",
            "resource_uri",
            "pump_type",
            "pump_duration",
            "pump_state",
            "at",
            "pump",
        ]
        depth = 2
        read_only_fields = ["id", "pump", "at"]

the api result (too large nested objects):

HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "id": 1,
    "resource_uri": "https://hub-e61.local/api/v2/pumps/1/",
    "pump_settings": [
        "https://hub-e61.local/api/v2/pumpsettings/1/",
        "https://hub-e61.local/api/v2/pumpsettings/265/",
        "https://hub-e61.local/api/v2/pumpsettings/266/",
        "https://hub-e61.local/api/v2/pumpsettings/910/",
        "https://hub-e61.local/api/v2/pumpsettings/912/",
        "https://hub-e61.local/api/v2/pumpsettings/1781/",
        "https://hub-e61.local/api/v2/pumpsettings/1814/",
        "https://hub-e61.local/api/v2/pumpsettings/1988/",
        "https://hub-e61.local/api/v2/pumpsettings/2155/",
        "https://hub-e61.local/api/v2/pumpsettings/2217/",
        "https://hub-e61.local/api/v2/pumpsettings/2841/",
        "https://hub-e61.local/api/v2/pumpsettings/3006/",
        "https://hub-e61.local/api/v2/pumpsettings/3246/",
        "https://hub-e61.local/api/v2/pumpsettings/3342/",
        "https://hub-e61.local/api/v2/pumpsettings/6730/",
        "https://hub-e61.local/api/v2/pumpsettings/6741/",
        /../ too many more records
      ],
      "water_pump": {
        "resource_uri": "https://hub-e61.local/api/v2/waterpumps/1/",
        "unique_id": "227181158168",
        "firmware": "10",
        "ip_address": "0.0.0.0",
        "mdns": "water-pump-a60.local",
        "hub_unique_id": "hub-e61",
        "pair_status": 127,
        "i2c_device_type": 1,
        "i2c_address": 32,
        "leds_status": 1
    }
}