Overriding save behaviour

docs/override_save.rst

@@ -1,2 +1,20 @@
 How to override save behaviour for Django admin?
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+
+:code:`ModelAdmin` has a :code:`save_model` method, which is used for creating and updating model objects.
+By overriding this, you can customize the save behaviour for admin.
+
+
+The :code:`Hero` model has the following field.::
+
+    added_by = models.ForeignKey(settings.AUTH_USER_MODEL,
+            null=True, blank=True, on_delete=models.SET_NULL)
+
+
+If you want to always save the current user whenever the Hero is updated, you can do.::
+
+    def save_model(self, request, obj, form, change):
+        obj.added_by = request.user
+        super().save_model(request, obj, form, change)
+
+