Finding the last modified timestamp for a group of Models

[Alex Guetsche]

I have an application which contains more than one Model, all descended from an abstract one. All the operational Models have created and modified fields with datetime timestamps. [How] can I get the Django ORM to bring me the last modified timestamp that will be the maximum of all createds and modifieds of all Models? Right now I have to use itertools for a quite convoluted expression over query sets of all the models involved.

It seems quite an obvious use case, and it can be implemented in pure SQL quite easily.

[Jason]

https://docs.djangoproject.com/en/5.0/ref/applications/#django.apps.AppConfig.get_models

gets you an iterable of all models loaded