add compatibility layer for Django-1.8

jrief · bplociennik · commit 43dabe5cdac7 · 2019-03-07T08:10:21.000+01:00
diff --git a/cms/templatetags/cms_admin.py b/cms/templatetags/cms_admin.py
@@ -6,6 +6,7 @@
 from classytags.helpers import InclusionTag
 from cms.constants import PUBLISHER_STATE_PENDING
 
+from django import VERSION as DJANGO_VERSION
 from django import template
 from django.conf import settings
 from django.contrib.admin.views.main import ERROR_FLAG
@@ -129,8 +130,10 @@ def choices():
 @register.filter
 def boolean_icon(value):
     BOOLEAN_MAPPING = {True: 'yes', False: 'no', None: 'unknown'}
+    EXTENSION = 'gif' if DJANGO_VERSION < (1, 9) else 'svg'
     return mark_safe(
-        '<img src="%sicon-%s.svg" alt="%s" />' % (CMS_ADMIN_ICON_BASE, BOOLEAN_MAPPING.get(value, 'unknown'), value))
+        '<img src="%sicon-%s.%s" alt="%s" />' % (CMS_ADMIN_ICON_BASE, BOOLEAN_MAPPING.get(value, 'unknown'), EXTENSION,
+                                                 value))
 
 
 @register.filter
