So would you "defer" the other columns like "only()"?
If nothing else, you could try using .annotate(F('author__hometown')) (not
sure if that works) or .values('author__hometown') to just get the values
you need.
On Mon, Feb 11, 2019 at 5:50 AM Riccardo Magliocchetti <
riccardo.magliocche...@gmail.com> wrote:
> 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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