How should I use DurationField in my model?

Question

In my model I want to be able to input duration, like 2 years, 5 months, etc.

In version 1.8 DurationField was introduced so

Answer 1

To use a DurationField in django 1.8 you have to use a python datetime.timedelta instance like this:

Considering this model :

from django.db import models

class MyModel(models.Model):
    duration = models.DurationField()

You can set a duration this way :

import datetime

my_model = MyModel()
my_model.duration = datetime.timedelta(days=20, hours=10)

And query it this way :

# Equal
durations = MyModel.objects.filter(duration=datetime.timedelta(*args, **kwargs))

# Greater than or equal
durations = MyModel.objects.filter(duration__gte=datetime.timedelta(*args, **kwargs))

# Less than or equal
durations = MyModel.objects.filter(duration__lte=datetime.timedelta(*args, **kwargs))

More info on datetime.timedelta here and on DurationField here.

In your admin panel, you can enter a duration with a string with following format : [DD] [[hh:]mm:]ss