From 7fa12413028c8681f81832770b00bf07a950693d Mon Sep 17 00:00:00 2001
From: Étienne Loks <etienne.loks@iggdrasil.net>
Date: Thu, 4 Jan 2018 12:16:14 +0100
Subject: Custom form: warehouse forms

---
 ishtar_common/models.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'ishtar_common')

diff --git a/ishtar_common/models.py b/ishtar_common/models.py
index 626770011..4db445c41 100644
--- a/ishtar_common/models.py
+++ b/ishtar_common/models.py
@@ -23,6 +23,7 @@ Models description
 from cStringIO import StringIO
 import copy
 import datetime
+import inspect
 from PIL import Image
 import logging
 import os
@@ -1686,7 +1687,8 @@ class CustomForm(models.Model):
                     # not very clean... but do not treat inappropriate items
                     continue
                 form = getattr(app_form, form)
-                if not issubclass(form, CustomForm) \
+                if not inspect.isclass(form) \
+                        or not issubclass(form, CustomForm) \
                         or not getattr(form, 'form_slug', None):
                     continue
                 cls._register[form.form_slug] = form
-- 
cgit v1.2.3