Re: Is a model method the answer?

Thanks Roald,
By "b_set" do you mean that I have to create a queryset instance? If
so, I should place it just above the function?

On May 26, 7:21 pm, Roald <downa...@gmail.com> wrote:
> On May 26, 11:07 am, piker <da...@allnatives.com.au> wrote:
>
> > I have a model class (A) that has a  M2M field with its relationship
> > to another model (B). When I save an instance of model class (A) I
> > want to automatically update a BooleanField in all the many, related
> > model(B) instances at the same time. Is the right way to do this
> > through a Model Method? If so, how should I reference across the M2M
> > relationship? Any advice appreciated as I can't seem to find an answer
> > to this specific problem.
>
> Something like the code below (untested). If you want to update
> depending on the current value of bool_field, have a look athttps://docs.djangoproject.com/en/dev/topics/db/queries/#filters-can-....
>
> class A(models.Model):
>     ...
>     def save(self, *args, **kwargs):
>         super(A, self).save(*args, **kwargs)
>         self.b_set.update(bool_field=True)
>
> Cheers, Roald

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