Model method versus overriding save()

Hi,

I have a "ranking" field for an item that returns an integer between 1 to 10 based on a number of criteria of each item.

My question is - what are the pros and cons of using a model method to return this, versus overriding the save() method and saving it directly into a normal IntegerField on that item?

I understand that model methods won't let me use them within QuerySet filters on that item - is there any way around that?

If I just override the model's save() method to get it recalculate and save that field each time, I can use it within QuerySet filters. Any cons with that approach?

What do you guys tend to use in your projects?

Cheers,

Victor

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