From 2f25e2b24cb29e44d7010449c11e454a776a8df8 Mon Sep 17 00:00:00 2001
From: jiangweidong <weidong.jiang@fit2cloud.com>
Date: Sat, 9 Oct 2021 17:49:23 +0800
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---
 apps/common/mixins/serializers.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/apps/common/mixins/serializers.py b/apps/common/mixins/serializers.py
index 88e579369..e9a1641c4 100644
--- a/apps/common/mixins/serializers.py
+++ b/apps/common/mixins/serializers.py
@@ -297,10 +297,10 @@ class CommonSerializerMixin(DynamicFieldsMixin, DefaultValueFieldsMixin):
     initial_data: dict
 
     def get_initial_value(self, attr, default=None):
-        if self.instance:
-            return getattr(self.instance, attr, default)
-        else:
-            return self.initial_data.get(attr)
+        value = self.initial_data.get(attr)
+        if not value and self.instance:
+            value = getattr(self.instance, attr, default)
+        return value
 
 
 class CommonBulkSerializerMixin(BulkSerializerMixin, CommonSerializerMixin):