Can the new `Prefetch` solve my problem?

Hi guys,

I'm trying to solve a problem using the new `Prefetch` but I can't figure out how to use it. 

I have these models:

    class Desk(django.db.models.Model):

        pass

    

    class Chair(django.db.models.Model):

        desk = django.db.models.Foreignkey('Desk', related_name='chair',)

        nearby_desks = django.db.models.ManyToManyField(

            'Desk',

            blank=True,

        )

I want to get a queryset for `Desk`, but it should also include a prefetched attribute `favorite_or_nearby_chairs`, whose value should be equal to: 

    Chair.objects.filter(

        (django.db.models.Q(nearby_desks=desk) | django.db.models.Q(desk=desk)),

        some_other_lookup=whatever,

    )

Is this possible with `Prefetch`? I couldn't figure out how to use the arguments.

Thanks,

Ram.

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