From 45b2e7702dd76b11156c9b9b5af707be2b5480ca Mon Sep 17 00:00:00 2001
From: Diego Alberto Torres Quintanilla <diegoalbertotorres@gmail.com>
Date: Fri, 31 May 2019 14:54:03 -0400
Subject: [PATCH] Guard against missing request context in logging docs.

---
 docs/logging.rst | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/docs/logging.rst b/docs/logging.rst
index 36ed7c85..937b2ae4 100644
--- a/docs/logging.rst
+++ b/docs/logging.rst
@@ -117,13 +117,18 @@ your own fields that can be used in messages. You can change the formatter for
 Flask's default handler, the mail handler defined above, or any other
 handler. ::
 
-    from flask import request
+    from flask import has_request_context, request
     from flask.logging import default_handler
 
     class RequestFormatter(logging.Formatter):
         def format(self, record):
-            record.url = request.url
-            record.remote_addr = request.remote_addr
+            if has_request_context():
+                record.url = request.url
+                record.remote_addr = request.remote_addr
+            else:
+                record.url = None
+                record.remote_addr = None
+
             return super().format(record)
 
     formatter = RequestFormatter(