delegation code generate

app/entities/models.py

@@ -101,7 +101,11 @@ class Delegation(AuditClass):
     def save(self, *args, **kwargs):
         super(Delegation, self).save(*args, **kwargs)
         code = number_generator(enums.GenerateCode.DELEGATION.value, self.id)
-        Delegation.objects.filter(id=self.id).update(code=code)
+        
+        if self.code == '':
+            self.code = code
+            self.created = datetime.now()
+            self.save()
 
 
 class Company(AuditClass):