Duplicating model instances and their related objects in Django / Algorithm for recusrively duplicating an object

Question

I\'ve models for Books, Chapters and Pages. They are all written by a User:

from django.db import models
         


        

Answer 1

Suggestion of Julio Marins works! Thnx!

For Django >= 2.* this line:

if isinstance(f, ForeignKey) and f.rel.to in related_models:

Should be replaced with:

if isinstance(f, ForeignKey) and f.remote_field.model in related_models: