their order if I am understanding you right does not effect this, the last part is just a join between the tables, you don't have to create another table
On Thu, Aug 28, 2014 at 8:46 AM, Jason G <jason.graz...@gmail.com> wrote: > Hi all, > > I am building an app to track my home brewing. > > I have two tables, one for vessels, and another for brews. > > I want the Brew table to have a pick-list, relation to Vessels so I can > say what vessel the brew is in. > > I also want to render a table that shows all Vessels and what Brew is in > each. There should be a one-to-one relationship until the Brew is 'Kicked', > which could be a vessel or maybe a null value in the Brew table. > > My code currently doesn't work, but looks something like this: > > class Vessel(models.Model): > Name = models.CharField(max_length=20) > Gallons = models.DecimalField(max_digits=4, decimal_places=2, > null=True, blank=True) > Weight = models.DecimalField(max_digits=4, decimal_places=2, > null=True, blank=True) > CurrentBrew = models.ForeignKey(Brew, db_column='Vessel') > <--------------------------------------this is what I'm trying to add > def __unicode__(self): > return self.Name > > class Brew(models.Model): > ... > Name = models.CharField(max_length=40, null=True, default='TBD') > InformalName = models.CharField(max_length=40) > Status = models.IntegerField(max_length=1, choices=STATUS_CHOICES, > default=1, null=False, blank=False) > Gallons = models.DecimalField(max_digits=4, decimal_places=2, > null=True, blank=True) > Vessel = models.ForeignKey(Vessel) > Style = models.ForeignKey(Style) > Event = models.CharField(max_length=40, null=True, blank=True) > > In this model, which I'm not sure is the best way to do it, the Vessel > class does not yet know about the Brew model that is below it. > > I'm starting to grasp this language (and love it, coming from doing > asp/sql several years ago) but I'm stuck here. Help! > > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to django-users+unsubscr...@googlegroups.com. > To post to this group, send email to django-users@googlegroups.com. > Visit this group at http://groups.google.com/group/django-users. > To view this discussion on the web visit > https://groups.google.com/d/msgid/django-users/dd40f53a-c398-4806-b09d-1605d3f15ead%40googlegroups.com > <https://groups.google.com/d/msgid/django-users/dd40f53a-c398-4806-b09d-1605d3f15ead%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- Gerald Klein DBA contac...@geraldklein.com www.geraldklein.com <http://geraldklein.com/> geraldklein.wordpress.com j...@zognet.com 708-599-0352 Arch, Gentoo I3, Ranger & Vim the coding triple threat. Linux registered user #548580 Brought to you by the Amish Mafia -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com. To post to this group, send email to django-users@googlegroups.com. Visit this group at http://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/CAP8NtCz9%2BURQG23wR%3DXSkUozJ7vFvDXOnp5cfyRPMFdXTOJ%2BzQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
