git displaysets working in viva view

atlas/models.py

@@ -1152,6 +1152,11 @@ class CaseDisplaySet(models.Model, AuthorMixin):
     structures = models.ManyToManyField(Structure, blank=True)
     conditions = models.ManyToManyField(Condition, blank=True)
    
+    def viewerstate_string(self):
+        return json.dumps(self.viewerstate) if self.viewerstate else "{}"
+
+    def annotations_string(self):
+        return json.dumps(self.annotations) if self.annotations else "{}"
 
 
 class CaseDetail(models.Model):