# Generated by Django 5.1.7 on 2025-03-25 20:33 import datetime from django.db import migrations, models from django.db.models import F, Sum def calculate_game_playtime(apps, schema_editor): Game = apps.get_model("games", "Game") games = Game.objects.all() for game in games: total_playtime = game.sessions.aggregate( total_playtime=Sum(F("duration_total")) )["total_playtime"] if total_playtime: game.playtime = total_playtime game.save(update_fields=["playtime"]) class Migration(migrations.Migration): dependencies = [ ("games", "0012_alter_session_duration_calculated"), ] operations = [ migrations.AddField( model_name="game", name="playtime", field=models.DurationField( blank=True, default=datetime.timedelta(0), editable=False ), ), migrations.RunPython(calculate_game_playtime), ]