Call ahoy.reset during Warden before_logout hook

CHANGELOG.md

@@ -1,3 +1,7 @@
+## Unreleased
+
+- Add `before_logout` hook to Warden that calls `ahoy.reset`
+
 ## 5.0.2 (2023-10-05)
 
 - Excluded visits from Rails health check

README.md

@@ -212,14 +212,20 @@ visitable :sign_up_visit
 
 ### Users
 
-Ahoy automatically attaches the `current_user` to the visit. With [Devise](https://github.com/heartcombo/devise), it attaches the user even if they sign in after the visit starts.
+Ahoy automatically attaches the `current_user` to the visit. With [Devise](https://github.com/heartcombo/devise), it attaches the user even if they sign in after the visit starts. It also resets the tracker's associated user after they sign out.
 
 With other authentication frameworks, add this to the end of your sign in method:
 
 ```ruby
 ahoy.authenticate(user)
 ```
 
+Add this to the end of your sign out method:
+
+```ruby
+ahoy.reset
+```
+
 To see the visits for a given user, create an association:
 
 ```ruby

lib/ahoy/warden.rb

@@ -3,3 +3,9 @@
   ahoy = Ahoy::Tracker.new(request: request)
   ahoy.authenticate(user)
 end
+
+Warden::Manager.before_logout do |_, auth, _|
+  request = ActionDispatch::Request.new(auth.env)
+  ahoy = Ahoy::Tracker.new(request: request)
+  ahoy.reset
+end