Filtering a QuerySet by the result of user.has_perm

[Adam Gamble]

Hi all,

I'm stuck on how to restructure the following in order to return a QuerySet instead of a List (needed for Lazy evaluation):

filter(lambda o: user.has_perm('read', o), MyModel.objects.all())

Using django-guardian, for object-level permissions.

Appreciate any ideas,

Adam

[Collin Anderson]

Hi Adam,

It's pretty inefficient, but you can do:

MyModel.objects.filter(pk__in=[obj.pk for obj in MyModel.objects.all() if user.has_perm('read', obj)])

But, actually, I think you want to use get_objects_for_user():

http://django-guardian.readthedocs.org/en/v1.2/userguide/check.html#get-objects-for-user

Collin