How to filter queryset in changelist_view in django admin?
- by minder
Let's say I have a site where Users can add Entries through admin panel. Each User has his own Category he is responsible for (each Category has an Editor assigned through ForeingKey/ManyToManyField).
When User adds Entry, I limit the choices by using EntryAdmin like this:
class EntryAdmin(admin.ModelAdmin):
(...)
def formfield_for_foreignkey(self, db_field, request, **kwargs):
if db_field.name == 'category':
if request.user.is_superuser:
kwargs['queryset'] = Category.objects.all()
else:
kwargs['queryset'] = Category.objects.filter(editors=request.user)
return db_field.formfield(**kwargs)
return super(EntryAdmin, self).formfield_for_foreignkey(db_field, request, **kwargs)
This way I can limit the categories to which a User can add Entry and it works perfect.
Now the tricky part: On the Entry changelist/action page I want to show only those Entries which belong to current User's Category. I tried to do this using this method:
def changelist_view(self, request, extra_context=None):
if not request.user.is_superuser:
self.queryset = self.queryset.filter(editors=request.user)
But I get this error:
AttributeError: 'function' object has no attribute 'filter'
This is strange, because I thought it should be a typical QuerySet. Basically such methods are not well documented and digging through tons of Django code is not my favourite sport.
Any ideas how can I achieve my goal?
