cineclub-site/server/myapi/serializers.py

from rest_framework import serializers
from .models import Film


class MoreFieldsModelSerializer(serializers.ModelSerializer):
    def get_field_names(self, declared_fields, info):
        expanded_fields = super().get_field_names(declared_fields, info)

        if getattr(self.Meta, "extra_fields", None):
            return expanded_fields + self.Meta.extra_fields
        else:
            return expanded_fields


class FilmSerializer(serializers.ModelSerializer):
    class Meta:
        model = Film
        fields = "__all__"  #