Is there any Django function which will let me get an object form the database, or None if nothing matches?
Right now I'm using something like:
foo = Foo.objects.filter(bar=baz) foo = len(foo) > 0 and foo.get() or None
But that's not very clear, and it's messy to have everywhere.
In Django 1.6 you can use the
first() Queryset method. It returns the first object matched by the queryset, or None if there is no matching object.
p = Article.objects.order_by('title', 'pub_date').first()
There are two ways to do this;
try: foo = Foo.objects.get(bar=baz) except model.DoesNotExist: foo = None
Or you can use a wrapper:
def get_or_none(model, *args, **kwargs): try: return model.objects.get(*args, **kwargs) except model.DoesNotExist: return None
Call it like this
foo = get_or_none(Foo, baz=bar)