Return self if called on the class instead of instance to not error o…

…ut in metaprogramming in internals of djangorestframework.
jazzband · Apr 25, 2021 · a8b7cb1 · a8b7cb1
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diff --git a/AUTHORS.rst b/AUTHORS.rst
@@ -49,6 +49,7 @@ Authors
 - Hamish Downer
 - Hanyin Zhang
 - Hernan Esteves (`sevetseh28 <https://github.com/sevetseh28>`_)
+- Hielke Walinga (`hwalinga <https://github.com/hwalinga>`_)
 - Jack Cushman (`jcushman <https://github.com/jcushman>`_)
 - James Muranga (`jamesmura <https://github.com/jamesmura>`_)
 - James Pulec

diff --git a/simple_history/models.py b/simple_history/models.py
@@ -579,6 +579,8 @@ def __init__(self, model, fields_included):
         self.fields_included = fields_included
 
     def __get__(self, instance, owner):
+        if instance is None:
+            return self
         values = {f.attname: getattr(instance, f.attname) for f in self.fields_included}
         return self.model(**values)