DB Objects 갯수구하기

장고에서 단순히 Object의 갯수만을 세고 싶을때는 .count()를 사용하면 된다.

count

count()

Returns an integer representing the number of objects in the database matching the QuerySet. The count() method never raises exceptions.

Example:

# Returns the total number of entries in the database.
Entry.objects.count()

# Returns the number of entries whose headline contains 'Lennon'
Entry.objects.filter(headline__contains='Lennon').count()