replacing deprecated approach of get_index()

celery_haystack_index/queued_indexer.py

@@ -1,14 +1,14 @@
 from django.db.models import signals
 from django.db.models.loading import get_model
 
+from haystack import connections
 from haystack import indexes
-from haystack import site
 
 from tasks import SearchIndexUpdateTask
 
 def remove_instance_from_index(instance):
     model_class = get_model(instance._meta.app_label, instance._meta.module_name)
-    search_index = site.get_index(model_class)
+    search_index = connections['default'].get_unified_index.get_index(model_class)
     search_index.remove_object(instance)
 
 class QueuedSearchIndex(indexes.SearchIndex):

celery_haystack_index/tasks.py

@@ -1,6 +1,6 @@
 from django.db.models.loading import get_model
 
-from haystack import site
+from haystack import connections
 from haystack.management.commands import update_index
 
 from celery.task import Task, PeriodicTask
@@ -17,7 +17,7 @@ def run(self, app_name, model_name, pk, **kwargs):
         try:
             model_class = get_model(app_name, model_name)
             instance = model_class.objects.get(pk=pk)
-            search_index = site.get_index(model_class)
+            search_index = connections['default'].get_unified_index.get_index(model_class)
             search_index.update_object(instance)
         except Exception, exc:
             logger.error(exc)