On Wed, Nov 17, 2010 at 11:36 PM, Jonas Geiregat <jo...@geiregat.org> wrote:
> Hello,
>
> Can I use django's generic relations to create a model (GenericPost) that
> can point to other model (APost) or model (ReviewPost) ?
> And then use this GenericPost model to get a list of all latest APost's and
> ReviewPost's ?
>
> I've been trying this all day long but I couldn't get around the API.
>
> Here's what I've done:
>
> from django.db import models
> from django.contrib.contenttypes.models import ContentType
> from django.contrib.contenttypes import generic
>
>
> # Create your models here.
>
> class Post(models.Model):
> title = models.CharField(max_length=100)
>
> class Meta:
> abstract = True
>
> class APost(Post):
> content = models.CharField(max_length=100)
>
> class Review(Post):
> rcontent = models.CharField(max_length=100)
>
> class GenericPost(models.Model):
> content_type = models.ForeignKey(ContentType)
> object_id = models.PositiveIntegerField()
> content_object = generic.GenericForeignKey('content_type', 'object_id')
>
>
> Some shell code trying to build up some data:
>
> In [1]: from genericv.foo.models import APost, GenericPost, Review
>
> In [2]: a = APost(content="something")
>
> In [3]: a.save()
>
> In [4]: g = GenericPost(content_object=a)
>
> In [5]: g.save()
>
> In [6]: GenericPost.objects.all()
> Out[6]: [<GenericPost: GenericPost object>, <GenericPost: GenericPost
> object>, <GenericPost: GenericPost object>, <GenericPost: GenericPost object>]
>
>
>
> Why is it that I have 4 objects already when I only have created one ?
I don't know, but I try your code and I get only one object:
>>> GenericPost.objects.all()
[<GenericPost: GenericPost object>]
>And how do I access that particular object by using the GenericPost model ?
I'm not a master of generic relations and I donk now if this way is
the best of, but you can use content_object manager for retrieve the
object:
>>> GenericPost.objects.get(pk=1).content_object.content
u'something'
>
--
Marc
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