How do I do date math in a Django ORM query?

Question

I'm using Django with Python 3.7. I have teh below model ...

class Article(models.Model):
    ...
    title = models.TextField(null=False)
    created_on = models.DateTimeField(default=datetime.now)

I would like to write a Django ORM query where I find all articles that are older than 5 minutes. But I'm not sure how to write such a query. I tried

Article.objects.filter((datetime.now(timezone.utc) - created_on)__gte==300)

But this results in a

SyntaxError: invalid syntax

error.

Answer 1

From my understandings to read your question. You want to find the list of article which are older than 5 mins considering current time. If am I right than you need to first subtract 5 mins from your time and than make query with greater than or equal (gte) ex:created_on__gte

Sample code is given below. Hope this will help

from datetime import datetime, timedelta
date_to_query = datetime.now(timezone.utc) - timedelta(hours=0, minutes=5)

Article.objects.filter(created_on__gte=date_to_query)