From bb7e9e58917a54e0982d4d343ed14895b3e9871c Mon Sep 17 00:00:00 2001
From: Matthew Tretter <m@tthewwithanm.com>
Date: Mon, 10 Jun 2013 18:33:22 -0400
Subject: [PATCH] Fix cache backend fallback

Closes #225
Closes #226
---
 imagekit/conf.py | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/imagekit/conf.py b/imagekit/conf.py
index 1edad95..2900da1 100644
--- a/imagekit/conf.py
+++ b/imagekit/conf.py
@@ -24,14 +24,19 @@ class ImageKitConf(AppConf):
             else:
                 dummy_cache = 'django.core.cache.backends.dummy.DummyCache'
 
+            # DEFAULT_CACHE_ALIAS doesn't exist in Django<=1.2
+            try:
+                from django.core.cache import DEFAULT_CACHE_ALIAS as default_cache_alias
+            except ImportError:
+                default_cache_alias = 'default'
+
             if settings.DEBUG:
                 value = dummy_cache
+            elif default_cache_alias in getattr(settings, 'CACHES', {}):
+                value = default_cache_alias
             else:
-                value = (
-                    getattr(settings, 'CACHES', {}).get('default')
-                    or getattr(settings, 'CACHE_BACKEND', None)
-                    or dummy_cache
-                )
+                value = getattr(settings, 'CACHE_BACKEND', None) or dummy_cache
+
         return value
 
     def configure_default_file_storage(self, value):