From d6a7533b452426ca16c96f9c76af9e35a4d07355 Mon Sep 17 00:00:00 2001
From: Ivlev Denis <di-erz@yandex.ru>
Date: Thu, 15 Feb 2018 14:30:48 +0300
Subject: [PATCH] Fix auto assign author

---
 api/v1/serializers/course.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/api/v1/serializers/course.py b/api/v1/serializers/course.py
index 226c8bfc..0ee480bd 100644
--- a/api/v1/serializers/course.py
+++ b/api/v1/serializers/course.py
@@ -142,7 +142,7 @@ class CourseCreateSerializer(DispatchContentMixin,
         materials = validated_data.pop('materials', [])
         gallery = validated_data.pop('gallery', {})
         author = validated_data.get('author', None)
-        if not instance.author or not author:
+        if not instance.author or author and instance.author != author:
             validated_data['author'] = self.context['request'].user
         course = super().update(instance, validated_data)
         self.dispatch_materials(course, materials)