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Sane OneToOne getter

Author:
Wraithan
Posted:
November 10, 2010
Language:
Python
Version:
1.2
Tags:
DoesNotExist OneToOne OneToOneField
Score:
1 (after 1 ratings)

Since django insists on throwing a DoesNotExist rather than just returning a None from the far side of a null OneToOneField, I wrote this to have a sane way of getting those fields out without having to try/except all over in my code.

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from django.core.exceptions import ObjectDoesNotExist

def get_onetoone_or_none(obj, attr):
    """ Instead of letting django throw and exception, return None when a OneToOneField is null """
    try:
        return getattr(obj, attr)
    except ObjectDoesNotExist:
        return None

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