Question

I have a simple model like this:

class Auction(models.Model):
    name = models.CharField()

class Item(models.Model):
    auction = models.ForeignKey(Auction)
    name = models.CharField()
    price = models.FloatField()

class Bid(models.Model):
    item = models.ForeignKey(Item)
    user = models.ForeignKey(User)
    price = models.FloatField()

users place bids for an item. Knowing that a user is allowed to place just one bid for each item. If I have the auction id, can I get all user objects (not simple usernames, like in a values_list()) that placed a bid in that auction?

EDIT: I would also like to avoid using ‘in’

Answer 1

users = User.objects.filter(bid__item__auction_id=auction_id)