use new settings for redis

cof/settings/common.py

@@ -20,25 +20,6 @@ except KeyError:
     raise RuntimeError("Secrets missing")
 
 
-# Redis settings (for cache and channel layers)
-try:
-    from .secret import REDIS_USER, REDIS_PASS
-except ImportError:
-    REDIS_USER = os.environ.get("REDIS_USER", "")
-    REDIS_PASS = os.environ.get("REDIS_PASS", "")
-
-if REDIS_USER or REDIS_PASS:
-    REDIS_AUTH = REDIS_USER+":"+REDIS_PASS+"@"
-else:
-    REDIS_AUTH = ''
-
-REDIS_HOST = os.environ.get("REDIS_HOST", "localhost")
-REDIS_PORT = os.environ.get("REDIS_PORT", "6379")
-
-REDIS_BASE_URL = "redis://" + REDIS_AUTH + REDIS_HOST + ":" + REDIS_PORT
-# To select a specific redis database, do: REDIS_BASE_URL + '/<num_db>'
-
-
 # Other secrets
 try:
     from .secret import (
@@ -174,19 +155,19 @@ AUTHENTICATION_BACKENDS = (
 
 RECAPTCHA_USE_SSL = True
 
-# Cache settings (use db #1 of redis)
-
-CACHE_REDIS_URL = REDIS_BASE_URL + "/1"
+# Cache settings
 
 CACHES = {
     'default': {
         'BACKEND': 'redis_cache.RedisCache',
-        'LOCATION': CACHE_REDIS_URL,
+        'LOCATION': 'redis://:{passwd}@{host}:{port}/db'
+                    .format(passwd=REDIS_PASSWD, host=REDIS_HOST,
+                            port=REDIS_PORT, db=REDIS_DB),
     }
 }
 
 
-# Channels settings (use db #0 of redis)
+# Channels settings
 
 CHANNEL_LAYERS = {
     "default": {