[django] export object with dependants

django_export_with_dependants.py

# https://stackoverflow.com/a/30168962/6766934
from itertools import chain

from django.core import serializers
from django.contrib.admin.utils import NestedObjects

from tasks.models import SectionTypeDescriptor

collector = NestedObjects(using="default") # database name
collector.collect(SectionTypeDescriptor.objects.all())

objects = list(chain.from_iterable(collector.data.values()))
with open("section_type_descriptors.json", "w") as f:
    f.write(serializers.serialize("json", objects))