Allow using class properties of models for populating fields in serializers

[pktiuk]

One of the features I miss in DRF is mapping serializer fields to properties of selected models. (It could be a good alternative to some ReadWriteSerializerMethodFields )

Desired usage example:

models.py

# We have a model which stores some data in a different format than we are going to serve it
class Location(models.Model):
    lattitude_degrees = models.FloatField()

    @property
    def lat_radians(self):
        return deg_to_rad(self.lattitude_degrees)

    @lat_radians.setter
    def lat_radians(self, lat: float):
        self.lattitude_degrees = rad_to_deg(lat)

serializers.py

class LocationSerializer(serializers.ModelSerializer):
    class Meta:
        model = models.Location
        fields = ["lat_radians"]
    lat_radians = serializers.FloatField(source="lat_radians")

[browniebroke]

I think it's because ModelSerializer cannot infer the field type without a model field.

Have you tried the following?

class LocationSerializer(serializers.ModelSerializer):
    lat_radians = serializers.FloatField()

    class Meta:
        model = models.Location
        fields = ["lat_radians"]

[pktiuk]

@browniebroke

I think it's because ModelSerializer cannot infer the field type without a model field.

I updated my example to address this issue.

Have you tried the following?

I will check this out and let you know

[pktiuk]

It works as you said. Thank you for quick answer