From d5d9330b82d14c5930a8c6af99e84257f33e9e05 Mon Sep 17 00:00:00 2001
From: Alan Hamlett <alan.hamlett@gmail.com>
Date: Wed, 24 Jun 2020 08:31:47 -0700
Subject: [PATCH] Prevent AttributeError when listeners not present on Flask.g

---
 nplusone/ext/flask_sqlalchemy.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nplusone/ext/flask_sqlalchemy.py b/nplusone/ext/flask_sqlalchemy.py
index d9ef2f3..5c14fd6 100644
--- a/nplusone/ext/flask_sqlalchemy.py
+++ b/nplusone/ext/flask_sqlalchemy.py
@@ -48,7 +48,7 @@ def connect():
         @app.after_request
         def disconnect(response):
             for name in six.iterkeys(listeners.listeners):
-                listener = g.listeners.pop(name, None)
+                listener = g.get('listeners', {}).pop(name, None)
                 if listener:
                     listener.teardown()
             return response