django admin action without selecting objects -

is possible create custom admin action django admin doesn't require selecting objects run on?

if try run action without selecting objects, message:

items must selected in order perform actions on them. no items have been changed. 

is there way override behaviour , let action run anyway?

yuji on right track, i've used simpler solution may work you. if override response_action done below can replace empty queryset queryset containing objects before check happens. code checks action you're running make sure it's approved run on objects before changing queryset, can restrict happen in cases.

    def response_action(self, request, queryset):     # override allow exporting of records csv if no chkbox selected     selected = request.post.getlist(admin.action_checkbox_name)     if request.meta['query_string']:         qd = dictify_querystring(request.meta['query_string'])     else:         qd = none     data = request.post.copy()     if len(selected) == 0 , data['action'] in ('export_to_csv', 'extended_export_to_csv'):         ct = contenttype.objects.get_for_model(queryset.model)         klass = ct.model_class()         if qd:             queryset = klass.objects.filter(**qd)[:65535] # cap @ classic excel maximum minus 1 row headers         else:             queryset = klass.objects.all()[:65535] # cap @ classic excel maximum minus 1 row headers         return getattr(self, data['action'])(request, queryset)     else:         return super(modeladmincsv, self).response_action(request, queryset)