django object methods code example

Example 1: django q objects

from django.db.models import Q

obj, created = Person.objects.filter(
    Q(first_name='Bob') | Q(first_name='Robert'),
).get_or_create(last_name='Marley', defaults={'first_name': 'Bob'})

Example 2: 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.

Example 3: django delete object

SomeModel.objects.filter(id=id).delete()

Example 4: objects.filter django

>>> Entry.objects.filter(blog_id=4)

Example 5: create django object

Author.objects.create(name="Joe")

Example 6: .save() in django

>>> one_entry = Entry.objects.get(pk=1)