queryset filter django code example

Example 1: query set

A QuerySet is a list of a dictionary of objects in your database.

Example 2: pass in queryset as filter django

users = UserClasses.objects.filter(class_id=data['class_id'])
user_details = User.objects.filter(id__in=users.values_list('id', flat=True))

Example 3: what is queryset in django

what is queryset in django?

A QuerySet represents a collection of objects from your database. 
It can have zero, one or many filters. 
Filters narrow down the query results based on the given parameters. 
In SQL terms, a QuerySet equates to a SELECT statement, and a filter is a limiting clause such as WHERE or LIMIT.

Example 4: and in django query filter

Blog.objects.filter(entry__headline__contains='Lennon', entry__pub_date__year=2008)

Example 5: django queryset exists

if some_queryset.exists():
    print("There is at least one object in some_queryset")

Example 6: django filter values with OR operator

Blog.objects.filter(pk__in=[1, 4, 7])