Custom Django Form - django

Question

I'm trying to make a custom backend for my system and I've hit a bit of a snag....I want to give users the ability to add new makes/models/series that are not already in the system via a form. I'm wondering how I'll go about this...my models look as below:
class Manufacturer(models.Model):
MANUFACTURER_POPULARITY_CHOICES = (
('1', 'Primary'),
('2', 'Secondary'),
('3', 'Tertiary'),
)
manufacturer = models.CharField(max_length=15, blank=False)
date_added = models.DateField()
manufacturer_popularity = models.CharField(max_length=1,
choices=MANUFACTURER_POPULARITY_CHOICES)
def __unicode__(self):
return self.manufacturer
class Model(models.Model):
model = models.CharField(max_length=20, blank=False)
manufacturer = models.ForeignKey(Manufacturer)
date_added = models.DateField()
def __unicode__(self):
name = ''+str(self.manufacturer)+" "+str(self.model)
return name
class Series(models.Model):
series = models.CharField(max_length=20, blank=True, null=True)
model = models.ForeignKey(Model)
date_added = models.DateField()
def __unicode__(self):
name = str(self.model)+" "+str(self.series)
return name
class Engine(models.Model):
ENGINE_TYPE_CHOICES = (
('H', 'H'),
('I', 'I'),
('R', 'R'),
('V', 'V'),
('W', 'W'),
)
FUEL_TYPE_CHOICES = (
('G', 'Gas'),
('D', 'Diesel'),
)
size = models.DecimalField(max_digits=2, decimal_places=1)
type = models.CharField(max_length=1, choices=ENGINE_TYPE_CHOICES)
cylinders = models.PositiveSmallIntegerField()
spec = models.CharField(max_length=20, blank=True, null=True)
fuel_type = models.CharField(max_length=1, choices=FUEL_TYPE_CHOICES)
class CommonVehicle(models.Model):
year = models.ForeignKey(Year)
series = models.ForeignKey(Series)
engine = models.ForeignKey(Engine)
body_style = models.ForeignKey(BodyStyle)
transmission = models.ForeignKey(Transmission)
speeds = models.PositiveSmallIntegerField()
drive_train = models.ForeignKey(DriveTrain)
horse_power = models.PositiveSmallIntegerField()
litre_100km_city = models.DecimalField(max_digits=3, decimal_places=1)
litre_100km_hwy = models.DecimalField(max_digits=3, decimal_places=1)
def __unicode__(self):
name = ''+str(self.year)+" "+str(self.series)
return name

Answer 1

This seems to be a fairly standard job for a django model form. I would recommend following the documentation at http://docs.djangoproject.com/en/dev/topics/forms/modelforms/. There are detailed instructions there on how to create a form from a model and then save the returned submission to the database.