How to put timedelta in django model?

Question

With inspectdb I was able to get a \"interval\" field from postgres into django. In Django, it was a TextField. The object that I retrieved was indeed a timedelta object!

Answer 1

You can trivially normalize a timedelta to a single floating-point number in days or seconds.

Here's the "Normalize to Days" version.

float(timedelta.days) + float(timedelta.seconds) / float(86400)

You can trivially turn a floating-point number into a timedelta.

>>> datetime.timedelta(2.5)
datetime.timedelta(2, 43200)

So, store your timedelta as a float.

Here's the "Normalize to Seconds" version.

timedelta.days*86400+timedelta.seconds

Here's the reverse (using seconds)

datetime.timedelta( someSeconds/86400 )