Hello,

I'm debugging views leaking lots of memory in django 1.11. It looks like there is some connections with my usage of select_related(). But that's mail is not about that, not sure about my findings yet :)

So I have looked again at the select_related documentation here:
https://docs.djangoproject.com/en/2.1/ref/models/querysets/#select-related

and found this:
Book.objects.select_related('author__hometown').get(id=4) will cache the related Person and the related City

Up until now i thought that only the related model i've specified would get added to selected columns e.g. only the City because of hometown. But it looks that's not how it is :)

Would it make sense to add a parameter to change select_related behaviour to include only the columns of the related models specified? That could save quite a lot of bandwitdh for some use cases.

What do you think?

Thanks

--
Riccardo Magliocchetti
@rmistaken

http://menodizero.it

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