serializers.py

class LegalBasisDataWorkspaceSerializer(serializers.ModelSerializer):

    def __init__(self, *args, **kwargs):
        """
        Create {consent_type}_consent field for each Consent type.

        This flattens consent status in the API response, rather than returning
        nested serialized Consent objects
        """
        super(LegalBasisDataWorkspaceSerializer, self).__init__(*args, **kwargs)

        all_consent_types = list(Consent.objects.all().values_list("name", flat=True))

        for consent_type in all_consent_types:
            field_name = f"{consent_type}_consent"
            method_name = f"get_{field_name}"

            def inner(self, obj) -> bool:
                return consent_type in obj.consents.all().values_list("name", flat=True)

            setattr(self, method_name, types.MethodType(inner, self))

            self.fields[f"{consent_type}_consent"] = serializers.SerializerMethodField(
                method_name=method_name
            )

    class Meta:
        model = LegalBasis
        exclude = ["consents"]