Fix make global serializer() work with extras.

django_qserializer/serialization.py

@@ -91,7 +91,7 @@ def serialize_object(self, obj):
         raise NotImplementedError
 
     def serialize(self, objs):
-        yield from map(self.serialize_object, objs)
+        yield from map(self._serialize_object, objs)
 
 
 class _SerializableModelIterable(ModelIterable):

django_qserializer/tests/test_serializer.py

@@ -70,10 +70,13 @@ def serialize_object(self, obj):
     with django_assert_num_queries(1):
         bus = Bus.objects.to_serialize(S(extra=['myattr'])).first()
 
-    with django_assert_num_queries(0):
-        data = bus.serialize()
-
-    assert {
+    expected = {
         'plate': 'BUSER',
         'myattr': 'Hurricane Cart',
-    } == data
+    }
+
+    with django_assert_num_queries(0):
+        assert expected == bus.serialize()
+
+    with django_assert_num_queries(0):
+        assert expected == next(serialize([bus]))

setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = django_qserializer
-version = 0.2.1
+version = 0.2.2
 url = https://github.com/buserbrasil/django-qserializer
 license = MIT
 author = Iuri de Silvio