On Wed, 2006-08-09 at 14:58 -0700, [EMAIL PROTECTED] wrote: > That worked. This is what I ended up with: > ------------------------------------------------------------------------------- > from django.db import models > > # Create your models here. > > class Year(models.Model): > year= models.CharField(maxlength=200, unique=True) > event = models.CharField(maxlength=300, null=True, blank=True) > > class Admin: > ordering = ['year'] > > def __str__(self): > return self.year > > def get_events(self): > from mysite.serial_numbers.models import Serial_Number > return Serial_Number.objects.filter(year__pk=self.id) > ------------------------------------------------------------------------- > I'm still a little concerned about efficiency, particularly importing > Serial Number for every year. When I moved it to the top of the model > it failed "cannot import name Year" maybe because of the foreignKey > relationship?
Python only imports each module once. The next time you issue the import statement is checks to see if the name is in sys.modules and, if so, does nothing. So having the import statement there costs you precisely one dictionary key lookup each time. So, nothing at all, really. Regards, Malcolm --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users -~----------~----~----~----~------~----~------~--~---
