Hi,
If you find yourself doing that a lot in your project, yes a custom manager
is the way to go. Keep in mind that you can more then one manager attached
to your model, but the order matters
<https://docs.djangoproject.com/en/1.9/topics/db/managers/#default-managers>.
For the admin purposes, you can attach the default manager to your model,
and call it by overriding the get_queryset() ModelAdmin method from here
<https://github.com/django/django/blob/master/django/contrib/admin/options.py#L318>
# models.py
class Article(models.Model):
....
objects = ExcludeExpiredManager()
with_expired_objects = models.Manager()
# admin.py
class ArticleAdmin(admin.ModelAdmin):
def get_queryset(self, request):
qs = self.model.with_expired_objects.get_queryset()
ordering = self.get_ordering(request)
if ordering:
qs = qs.order_by(*ordering)
return qs
On a personal note, I prefer defining custom queryset and use the
as_manager()
<https://docs.djangoproject.com/en/1.9/topics/db/managers/#creating-a-manager-with-queryset-methods>
method
to get the manager, but in your case you might need the from_queryset()
<https://docs.djangoproject.com/en/1.9/topics/db/managers/#from-queryset>,
but I've never used it myself.
Hope that helps
On Tuesday, 12 July 2016 12:54:26 UTC+1, AT wrote:
>
> Being new to Django I wonder if someone could point me in the right
> direction and I apologise in advance if this is an obvious question.
>
> I have a model with a field that sets an expiry date.
>
> In my ListView I have the following:
> queryset =
> Article.objects.filter(expiry_date__gt=datetime.now()).order_by('expiry_date')
> Every thing works fine at this point.
>
> Would it be better to include this in a custom manager instead and if so
> how is this handled in the view or is it done just by including:
> model = Article
>
> A second point is, if I do this will the expired articles still be
> accessible via the admin?
>
> Many Thanks
>
>
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