Tuesday, March 1, 2011

Re: eval if an object meets with a queryset.

On 1 March 2011 10:55, Marc Aymerich <glicerinu@gmail.com> wrote:
> Hi!,
> I have a model class like this one:
>
> class Domain(models.Model):
>    active = models.BooleanField()
>    root = models.CharField(max_length=6)
>
> now given a Domain instance I need to know if it meets with an
> expresion like this one:
>
> active=True and (root='com' or root='net')
>
> one way to do that is get all domains that meets the expresion
> (formated as queryset) and check if the object is one of them.
> But maybe there is a more direct way to check it?

You can use filter's with get so:

Try:
myDomain = Domain.objects.get(active=True, etc...)
except myDomain.DoesNotExist:
myDomain = None

Kinda like that ish.

HTH
Dan

>
> Thanks!
> --
> Marc
>
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--
Dan Hilton
============================
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www.DanHilton.co.uk
============================

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