From 5afa971792019e16bb067f9020011788587572d8 Mon Sep 17 00:00:00 2001
From: Étienne Loks <etienne.loks@iggdrasil.net>
Date: Wed, 18 Oct 2017 10:43:55 +0200
Subject: Json field: fix pre_save in order to initialize json with an empty
 dict (refs #3077)

---
 ishtar_common/models.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'ishtar_common/models.py')

diff --git a/ishtar_common/models.py b/ishtar_common/models.py
index becb37516..6a59adb77 100644
--- a/ishtar_common/models.py
+++ b/ishtar_common/models.py
@@ -953,11 +953,15 @@ class JsonDataField(models.Model):
 
 
 class JsonData(models.Model):
-    data = JSONField(default={}, db_index=True)
+    data = JSONField(default={}, db_index=True, blank=True)
 
     class Meta:
         abstract = True
 
+    def pre_save(self):
+        if not self.data:
+            self.data = {}
+
 
 class Imported(models.Model):
     imports = models.ManyToManyField(
-- 
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