Getting the amount of guests in bookings made django

Question

If each a user goes into an event they can make an booking, but each event only has a certain amount of space open.

I would like to show in the event that there are 5 ou

Answer 1

if i correctly understand, you can try

@property
def bookings_total(self):
    return self.bookings_set.filter(bookingstatus='y').count()

@property
def bookings_left(self):
    return self.bookings_total - self.seats