Deactivate Celery if Redis unavailable

flaskbb/configs/default.py

@@ -172,6 +172,7 @@ class DefaultConfig(object):
     # Celery
     CELERY_BROKER_URL = 'redis://localhost:6379'
     CELERY_RESULT_BACKEND = 'redis://localhost:6379'
+    if not REDIS_ENABLED: CELERY_ALWAYS_EAGER=True
 
     # FlaskBB Settings
     # ------------------------------ #