primary key django model
class Garden(models.Model):
garden_id = models.IntegerField(primary_key=True)primary key django model
class Garden(models.Model):
garden_id = models.IntegerField(primary_key=True)super in django manager
# First, define the Manager subclass.
class DahlBookManager(models.Manager):
def get_queryset(self):
return super().get_queryset().filter(author='Roald Dahl')
# Then hook it into the Book model explicitly.
class Book(models.Model):
title = models.CharField(max_length=100)
author = models.CharField(max_length=50)
objects = models.Manager() # The default manager.
dahl_objects = DahlBookManager() # The Dahl-specific manager..save() in django
>>> one_entry = Entry.objects.get(pk=1)django models
poll = models.ForeignKey(
Poll,
on_delete=models.CASCADE,
verbose_name="the related poll",
)
sites = models.ManyToManyField(Site, verbose_name="list of sites")
place = models.OneToOneField(
Place,
on_delete=models.CASCADE,
verbose_name="related place",
)Copyright © 2021 Codeinu
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