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!
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