Django query code example
Example 1: q django
from django.db.models import Q
Q(question__startswith='Who') | Q(question__startswith='What')
Example 2: how to check if given primary key exists in django model
If using the object ---
try:
obj = model1.objects.get(pk=20)
except DoesNotExist:
Else ----
if model1.objects.filter(pk=20).exists():
else:
Example 3: django objects.create()
SomeModel.objects.create(firstname='ricky', lastname='ticky')
Example 4: 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 5: and in django query filter
Blog.objects.filter(entry__headline__contains='Lennon', entry__pub_date__year=2008)
Example 6: objects.filter django
>>> Entry.objects.filter(blog_id=4)