from django_elastic_appsearch import serialisers

class AuthorSerialiser(serialisers.AppSearchSerialiser):
    full_name = serialisers.MethodField()
    country_of_origin = serialisers.Field()
    birth_date = serialisers.Field()

    def get_full_name(self, instance):
        return '{}, {}'.format(
            instance.last_name,
            instance.other_names
        )