django createmany
>>> Category.objects.all().count()
2
>>> Category.objects.bulk_create(
[Category(name="God"),
Category(name="Demi God"),
Category(name="Mortal")]
)
[<Category: God>, <Category: Demi God>, <Category: Mortal>]
>>> Category.objects.all().count()
5super 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)Copyright © 2021 Codeinu
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