diff --git a/examples/github_auth.py b/examples/github_auth.py
new file mode 100644
index 00000000..e5dccb1b
--- /dev/null
+++ b/examples/github_auth.py
@@ -0,0 +1,124 @@
+# Example GitHub OAuth application
+#
+# With the flask-restx project checked out locally, run as follows from the project's root:
+# SWAGGER_UI_OAUTH_REDIRECT_URL="xxx" FLASK_APP=examples/github_auth.py FLASK_ENV=development SWAGGER_UI_OAUTH_CLIENT_ID=xxx PYTHONPATH=. flask run
+#
+# Ensure that SWAGGER_UI_OAUTH_REDIRECT_URL and SWAGGER_UI_OAUTH_CLIENT_ID match your GitHub app's OAuth settings.
+#
+
+from flask import Flask
+from flask_restx import Api, Resource, fields
+from werkzeug.middleware.proxy_fix import ProxyFix
+import os
+
+app = Flask(__name__)
+
+app.config["SWAGGER_UI_OAUTH_REDIRECT_URL"] = os.environ.get("SWAGGER_UI_OAUTH_REDIRECT_URL")
+app.config["SWAGGER_UI_OAUTH_CLIENT_ID"] = os.environ.get("SWAGGER_UI_OAUTH_CLIENT_ID")
+
+app.wsgi_app = ProxyFix(app.wsgi_app)
+
+authorizations = {
+    'OAuth2': {
+        'type': 'oauth2',
+        'flow': 'accessCode',
+        'authorizationUrl': 'https://github.com/login/oauth/authorize',
+        'tokenUrl': '/auth',
+        'scopes': {
+            'user:email': 'Read user email addresses'
+        }
+    }
+}
+
+api = Api(app, version="1.0", title="Todo API", description="A simple TODO API", authorizations=authorizations)
+
+ns = api.namespace("todos", description="TODO operations")
+auth_ns = api.namespace("auth", description="Auth operations")
+
+TODOS = {
+    "todo1": {"task": "build an API"},
+    "todo2": {"task": "?????"},
+    "todo3": {"task": "profit!"},
+}
+
+todo = api.model(
+    "Todo", {"task": fields.String(required=True, description="The task details")}
+)
+
+listed_todo = api.model(
+    "ListedTodo",
+    {
+        "id": fields.String(required=True, description="The todo ID"),
+        "todo": fields.Nested(todo, description="The Todo"),
+    },
+)
+
+
+def abort_if_todo_doesnt_exist(todo_id):
+    if todo_id not in TODOS:
+        api.abort(404, "Todo {} doesn't exist".format(todo_id))
+
+
+parser = api.parser()
+parser.add_argument(
+    "task", type=str, required=True, help="The task details", location="form"
+)
+
+
+@ns.route("/<string:todo_id>")
+@api.doc(responses={404: "Todo not found"}, params={"todo_id": "The Todo ID"})
+class Todo(Resource):
+    """Show a single todo item and lets you delete them"""
+
+    @api.doc(description="todo_id should be in {0}".format(", ".join(TODOS.keys())))
+    @api.marshal_with(todo)
+    def get(self, todo_id):
+        """Fetch a given resource"""
+        abort_if_todo_doesnt_exist(todo_id)
+        return TODOS[todo_id]
+
+    @api.doc(responses={204: "Todo deleted"})
+    def delete(self, todo_id):
+        """Delete a given resource"""
+        abort_if_todo_doesnt_exist(todo_id)
+        del TODOS[todo_id]
+        return "", 204
+
+    @api.doc(parser=parser)
+    @api.marshal_with(todo)
+    def put(self, todo_id):
+        """Update a given resource"""
+        args = parser.parse_args()
+        task = {"task": args["task"]}
+        TODOS[todo_id] = task
+        return task
+
+
+@ns.route("/")
+class TodoList(Resource):
+    """Shows a list of all todos, and lets you POST to add new tasks"""
+
+    @api.marshal_list_with(listed_todo)
+    def get(self):
+        """List all todos"""
+        return [{"id": id, "todo": todo} for id, todo in TODOS.items()]
+
+    @api.doc(parser=parser)
+    @api.marshal_with(todo, code=201)
+    def post(self):
+        """Create a todo"""
+        args = parser.parse_args()
+        todo_id = "todo%d" % (len(TODOS) + 1)
+        TODOS[todo_id] = {"task": args["task"]}
+        return TODOS[todo_id], 201
+
+@auth_ns.route("/")
+class Auth(Resource):
+    """Dummy Auth handler"""
+
+    def post(self):
+        """Finish auth"""
+        return True
+
+if __name__ == "__main__":
+    app.run(debug=True)
diff --git a/flask_restx/templates/swagger-ui.html b/flask_restx/templates/swagger-ui.html
index b233e018..7c44bf7f 100644
--- a/flask_restx/templates/swagger-ui.html
+++ b/flask_restx/templates/swagger-ui.html
@@ -52,8 +52,12 @@
             const ui = window.ui = new SwaggerUIBundle({
                 url: "{{ specs_url }}",
                 {% if config.SWAGGER_UI_OAUTH_CLIENT_ID -%}
-                oauth2RedirectUrl: "{{ url_for('restx_doc.static', filename='oauth2-redirect.html', _external=True) }}",
-                {%- endif %}
+                  {% if config.SWAGGER_UI_OAUTH_REDIRECT_URL -%}
+                    oauth2RedirectUrl: "{{ config.SWAGGER_UI_OAUTH_REDIRECT_URL }}",
+                  {% else -%}
+                    oauth2RedirectUrl: "{{ url_for('restx_doc.static', filename='oauth2-redirect.html', _external=True) }}",
+                  {% endif -%}
+                {% endif -%}
                 validatorUrl: "{{ config.SWAGGER_VALIDATOR_URL }}" || null,
                 dom_id: "#swagger-ui",
                 presets: [