doc: cookbook: document workaround for celery (joke2k#197)

See jazzband/django-configurations#196
tkdchen · Jul 11, 2018 · 2b0d2ce · 2b0d2ce
1 parent ee43a1d
commit 2b0d2ce
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/docs/cookbook.rst b/docs/cookbook.rst
@@ -136,8 +136,11 @@ Celery's documentation`_:
     os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'mysite.settings')
     os.environ.setdefault('DJANGO_CONFIGURATION', 'MySiteConfiguration')
 
-    import configurations
-    configurations.setup()
+    # The extra check is necessary to not call django.setup() twice.
+    from configurations import importer
+    if not importer.installed:
+        import configurations
+            configurations.setup()
 
     app = Celery('mysite')
     app.config_from_object('django.conf:settings')