Is there a way to filter based on the result of a model instance
method?
I've got a Permission model with a one-to-one relationship with an
Article. The Permission model stores the different groups that the
Article author said could read their article. There's about 6 groups
though, so I wrote an instance method that calculates whether a given
user can view an Article.
I want to filter based on whether that instance method returns true or
not. I could do something like the following, but it seems very
inefficient.
def myview(request):
q = Article.objects.all()
for item in q:
if not item.permission.can_view_article(request.user):
q = q.exclude(item.pk)
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