Make shopfront redirect work when logging out by storing it outside session data

app/controllers/application_controller.rb

@@ -62,11 +62,15 @@ class ApplicationController < ActionController::Base
   end
 
   def after_sign_out_path_for(_resource_or_scope)
-    session[:shopfront_redirect] || main_app.root_path
+    shopfront_redirect || main_app.root_path
   end
 
   private
 
+  def shopfront_redirect
+    session[:shopfront_redirect]
+  end
+
   def restrict_iframes
     response.headers['X-Frame-Options'] = 'DENY'
     response.headers['Content-Security-Policy'] = "frame-ancestors 'none'"

app/controllers/spree/user_sessions_controller.rb

@@ -39,8 +39,18 @@ module Spree
       end
     end
 
+    def destroy
+      # Logout will clear session data including shopfront_redirect
+      #   Here we store it before actually logging out so that the redirect works correctly
+      @shopfront_redirect = session[:shopfront_redirect]
+
+      super
+    end
+
     private
 
+    attr_reader :shopfront_redirect
+
     def accurate_title
       Spree.t(:login)
     end