Fix for deprecation of request.QUERY_PARAMS in DRF 3.2`

Author: jsenecal

rest_framework_json_api/mixins.py

@@ -10,7 +10,7 @@ def get_queryset(self):
         """
         Override :meth:``get_queryset``
         """
-        ids = dict(self.request.QUERY_PARAMS).get('ids[]')
+        ids = dict(getattr(self.request, 'query_params', self.request.QUERY_PARAMS)).get('ids[]')
         if ids:
             self.queryset = self.queryset.filter(id__in=ids)
         return self.queryset