Hello Collin, Il 11/02/19 17:35, Collin Anderson ha scritto:
So would you "defer" the other columns like "only()"?
Yeah, something like that
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.
Sure but the query would be everything but readable :)The point of a parameter to select_related would be to avoid to type explicitly fields not in select_related and the one in select_related twice.
On Mon, Feb 11, 2019 at 5:50 AM Riccardo Magliocchetti < [email protected]> 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 -- You received this message because you are subscribed to the Google Groups "Django developers (Contributions to Django itself)" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/django-developers. To view this discussion on the web visit https://groups.google.com/d/msgid/django-developers/a42050d3-25a2-2f47-c841-918d7d085757%40gmail.com . For more options, visit https://groups.google.com/d/optout.
-- Riccardo Magliocchetti @rmistaken http://menodizero.it -- You received this message because you are subscribed to the Google Groups "Django developers (Contributions to Django itself)" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/django-developers. To view this discussion on the web visit https://groups.google.com/d/msgid/django-developers/a4755ef5-26af-ffee-a7c1-4c12f0f850e6%40gmail.com. For more options, visit https://groups.google.com/d/optout.
