Hi,
I've got a problem with a custom manager on an abstract model. I've
something like this:
class CommonModelManager(models.Manager):
def get_query_set(self):
return super(CommonModelManager, self).get_query_set().filter
(time_deleted__isnull=True).filter
(registration_site=Site.objects.get_current())
class CommonModel(models.Model):
author = models.ForeignKey(User)
[other fields...]
registration_site = models.ForeignKey(Site, blank=True, null=True,
editable=False)
objects = CommonModelManager()
class Meta:
abstract = True
class Image(CommonModel):
image = ImageWithThumbnailsField([...])
title = models.CharField(_('title'), max_length=65, blank=True)
caption = models.TextField(_('caption'), blank=True,
max_length=512)
albums = models.ManyToManyField('Album', verbose_name=_('album'),
blank=True)
So, I have Image with a ForeignKey to User related to current Site. I
want to retrieve all images in current site from a user (a user can be
on multiple sites), using:
user.image_set.all()
but I can't, because I can't filter results in this type of manager
subclass (
http://docs.djangoproject.com/en/dev/topics/db/managers/#writing-correct-managers-for-use-in-automatic-manager-instances
).
An ugly solution may be:
Image.objects.filter(author=user)
But I think that that the most elegant solution is the one with
image_set and, if possible, I would like to use the elegant solution!
Any ideas to solve this problem?
Thanks, Paolo
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