# Generated by Django 4.0.7 on 2022-09-15 09:59 from django.db import migrations from django.db.models import Count def forwards_func(apps, schema_editor): books = apps.get_model("comic", "ComicBook") for book in books.objects.all().annotate(total_pages=Count('comicpage')): book.page_count = book.total_pages book.save() class Migration(migrations.Migration): dependencies = [ ('comic', '0048_comicbook_page_count'), ] operations = [ migrations.RunPython(forwards_func), ]