How do I query for objects created before a certain hour in a day in Django?

Question

In Django, I am trying to filter my query only to objects that were created before a certain hour in the day. I have a datetime field called \'created_at\' that stored the d

Answer 1

__hour on a DateTimeField is a lookup type, so you can't mix it with another lookup type like __lte. You could construct a filter with Q objects, EG:

before_ten = Q(created_at__hour=0)
for hour in range(1, 11):
    before_ten = before_ten | Q(created_at__hour=hour)
query = query.filter(before_ten)

If you can change your data model, it might be more convenient to save a creation time TimeField as well as your existing created_at.