Merge pull request #307 from CleitonDeLima/fix-cast-int-model-serializer

Fix conversion of non-integer pk value in ModelSerializer

Author: agateblue

dynamic_preferences/serializers.py

@@ -232,7 +232,7 @@ def to_python(self, value, **kwargs):
         if value is None:
             return
         try:
-            pk = int(value)
+            pk = self.model._meta.pk.to_python(value)
             return self.model.objects.get(pk=pk)
         except:
             raise self.exception("Value {0} cannot be converted to pk".format(value))