Given two different models, with the same parent base class. Is there any way, using either Django Rest Framework Serializers or serpy, to serialize a chained list containing instances of both the child models?

Given some example models:

class BaseModel(models.Model):created_at = models.DateField()class Meta:abstract = Trueclass ChildModel1(BaseModel):field_one = models.TextField()class ChildModel2(BaseModel):field_two = models.TextField()

And an example view:

def get(self, request):q1 = ChildModel1.objects.all()q2 = ChildModel2.objects.all()chained_list = sorted(chain(q1, q2),key=attrgetter('created_at'))serializer = BaseModelSerializer(chained_list, many=True)

The method for chaining the models is taken from the answer to this question.

With my current attempts I get a quite obvious error saying something like:

AttributeError: 'ChildModel1' object has no attribute 'field_two'

I know it is not the best practice to mix two models with some different fields, but in my case I thought it necessary.

Some examples of serializers I have tested:

First example:

class BaseModelSerializer(serializers.ModelSerializer):class Meta:model = BaseModel

Second example:

class BaseModelSerializer(serpy.Serializer):created_at = serpy.StrField()field_one = serpy.StrField(required=False)field_two = serpy.StrField(required=False)

You can define serializer that will combine two or more serializers together based on model:

class Model1Serializer(serializers.Serializer):...class Model2Serializer(serializers.Serializer):...class SummarySerializer(serializers.Serializer):""" Serializer that renders each instance with its own specific serializer """@classmethoddef get_serializer(cls, model):if model == Model1:return Model1Serializerelif model == Model2:return Model2Serializerdef to_representation(self, instance):serializer = self.get_serializer(instance.__class__)return serializer(instance, context=self.context).data

This will work for any models, not only for childs of one class.