On Feb 16, 2:56 pm, Derek <gamesb...@gmail.com> wrote: > (not a movie trivia problem!) > > The question I need to resolve here is "does Passenger 57 qualify for a > discount"? > > Given the following models: > > class Alliance(models.Model): > name = models.CharField(max_length=100) > #e.g. Star, Western, Pacific, European > discount = models.FloatField() > > class Airline(models.Model): > name = models.CharField(max_length=100) > #e.g. AIA, Northwest, Cathay, KLM > membership = models.ManyToManyField(Alliance) > > class Flight(models.Model): > name = models.CharField(max_length=100) > operator = models.ForeignKey(Airline) > > class Passenger(models.Model): > name = models.CharField(max_length=100) > flight = models.ForeignKey(Flight) > memberships = models.ManyToManyField(Alliance)
Ain't that "memberships" relationship redundant with passenger->flight- >operator->memberships ? > So, if Passenger 57 books a flight with, say, AIA, which is a member of the > Star and Western alliances, how can I tell if this qualifies for a > discount? How could we know ? There's zero documentation about your models fields, and zero documention about the business rules - specially the ones one relating to "discount" and "qualification". Or are we supposed to use a crystal ball ? -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-us...@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
