multiple queryset

Question

How I can use querySet interface for two and more models?
for example:

assortments = get_list_or_404(Assortment, [some_list]) #this is content_types of each models
category = [ assortment.type.model_class() for assortment in assortments ]
all_goods = map(lambda cl: cl.objects.filter(has_shop=True, **kwargs).distinct(), category)
all_goods = reduce(lambda l,l1: l.extend(l1) or l, all_goods, [])

but now i cant use querysets methods, like order_by, for example
how else can i get list of objects from different models?

ok. and what is the best way to sorted my list by prices for example? — JIoJIaJIu
– JIoJIaJIu, Commented Nov 30, 2010 at 13:51

Daniel Roseman · Accepted Answer · 2010-11-30 13:42:03Z

1

You can't. A queryset is an ordered collection of instances of a single model type. There's no such thing as a queryset of multiple models.

answered Nov 30, 2010 at 13:42

Daniel Roseman

602k68 gold badges910 silver badges923 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Daniel DiPaolo Over a year ago

+1, and it's very tightly-coupled to the Model concept as well! code.djangoproject.com/browser/django/trunk/django/db/models/… Can't even manually create your own generic QuerySet to handle this unless you boil it down to one common model.

Collectives™ on Stack Overflow

multiple queryset

1 Answer 1

1 Comment

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Related