I wound up doing it that way as well except I used the model name rather
than the ID:
data_type = models.ForeignKey(ContentType,
limit_choices_to = {"model__in": ("model1", "model2")},
)
On Wed, 2009-04-01 at 10:34 -0700, Lee wrote:
> Actually I tried to do as I suggested and I couldn't get it to
> work... I ended up using the following:
>
> from MyProject.MyApp.models import MyModel
>
> CONTENT_TYPE_CHOICES = (ContentType.objects.get_for_model
> (MyModel).id,)
>
> class My_Other_Model(models.Model):
> content_type = models.ForeignKey(ContentType, limit_choices_to=
> {'id__in': CONTENT_TYPE_CHOICES})
>
>
> On Apr 1, 11:48 am, Lee <[email protected]> wrote:
> > You're close...
> >
> > change your method in CHOICES to get_for_model( _model_ )
> >
> > So it should be
> > CHOICES = (
> > (ContentType.objects.get_for_model(My_Model), "Model 1"),
> > (ContentType.objects.get_for_model(My_Other_Model), "Model
> > 2"),
> > )
> >
> > Obviously, make sure you import your model before you try to use it.
> >
> > On Mar 23, 3:26 pm, Adam Stein <[email protected]> wrote:
> >
> > > Trying to create a generic FK using ContentType. In admin, the menu
> > > lists all the models. Since I only ever need to select 1 of 2 different
> > > models, anyway to limit the choice?
> >
> > > Setting the choices attribute as Django complains
> >
> > > must be a "ContentType" instance
> >
> > > ContentType.objects.get() returns an instance of a particular model, not
> > > ContentType (as one would expect), so I'm not sure how to create an
> > > instance with the particulars I need to point to something specific in
> > > the choices list. Here's what I have:
> >
> > > from django.db import models
> > > from django.contrib.contenttypes.models import ContentType
> > > from django.contrib.contenttypes import generic
> >
> > > class GenericFKExample(models.Model):
> > > CHOICES = (
> > > (ContentType.objects.get(model="model1"), "Model 1"),
> > > (ContentType.objects.get(model="model2"), "Model 2"),
> > > )
> >
> > > content_type = models.ForeignKey(ContentType,
> > > choices = CHOICES,
> > > null = True,
> > > )
> >
> > > object_id = models.PositiveIntegerField(
> > > null = True,
> > > )
> >
> > > content_object = generic.GenericForeignKey(
> > > "content_type", "object_id"
> > > )
> >
> > > Obviously, if I don't use choices, it works but then I have a very long
> > > list of model choices.
> >
> > > --
> > > Adam Stein @ Xerox Corporation Email: [email protected]
> >
> > > Disclaimer: Any/All views expressed
> > > here have been proven to be my own. [http://www.csh.rit.edu/~adam/]
> --
Adam Stein @ Xerox Corporation Email: [email protected]
Disclaimer: Any/All views expressed
here have been proven to be my own. [http://www.csh.rit.edu/~adam/]
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